Kiren by F-Secure Downloads & RevenueKiren by F-Secure · App Store & Google Play
Kiren by F-Secure gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Kiren by F-Secure by F-Secure Corporation is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
📦iOSUpdated to version 11.1.11📦iOSUpdated to version 11.1.10📦AndroidUpdated to version 11.1.10📦AndroidUpdated to version 11.1.9📈AndroidEntered the top 100📈AndroidCharting in a new country✏️AndroidDescription updated✏️AndroidShort description updated⭐iOSPassed 10K ratings📈iOSEntered the top 100📈iOSCharting in a new country✏️iOSDescription updated✏️iOSNew screenshots🆕AndroidFirst spotted by AppInsider🆕iOSFirst spotted by AppInsider🆕iOSReleased on the App Store
Full timeline · 48 events
- 📦Kiren by F-Secure updated to version 11.1.11iOS• Fixed a DNS setting that could stop websites loading.
• Blocked pages now show how to pause Browsing Protection. - 📦Kiren by F-Secure updated to version 11.1.10iOSWhat's new in Kiren 11.1.10
• Improved Japanese translations.
• Bug fixes and stability improvements. - 📦Kiren by F-Secure updated to version 11.1.10AndroidWhat's new in Kiren 11.1.10
• Improved Japanese translations.
• Bug fixes and stability improvements. - 📦Kiren by F-Secure updated to version 11.1.9iOSWhat's new in Kiren 11.1.9
• Use Kiren in more languages.
• Clearer results when you check your email for breaches.
• Bug fixes and stability improvements. - 📦Kiren by F-Secure updated to version 11.1.9AndroidWhat's new in Kiren 11.1.9
• Use Kiren in more languages.
• Clearer results when you check your email for breaches.
• Bug fixes and stability improvements. - 📦Kiren by F-Secure: now updating weeklyAndroid4 updates in 30 days, after a quiet two months
- 📦Kiren by F-Secure updated to version 11.1.8iOSThis update makes logging in smoother, makes breach tips easier to review, improves reliability, and includes bug fixes and performance improvements.
- 📦Kiren by F-Secure: now updating weeklyiOS4 updates in 30 days, after a quiet two months
- 📈Kiren by F-Secure entered the top 100AndroidTop Grossing · Tools · NL
- 📈Kiren by F-Secure charting in a new countryAndroidNetherlands
- 📦Kiren by F-Secure updated to version 11.1.7AndroidF-Secure Mobile Security is now Kiren. Updated protection, same subscription, redesigned to stop latest scams: fake stores, deepfakes, scam texts, and data breaches.
----
This update makes Kiren Plus setup smoother, improves reliability, and includes bug fixes and performance improvements.… more - 📦Kiren by F-Secure updated to version 11.1.8AndroidF-Secure Mobile Security is now Kiren. Updated protection, same subscription, redesigned to stop latest scams: fake stores, deepfakes, scam texts, and data breaches.
----
This update makes logging in smoother, makes breach tips easier to review, improves reliability, and includes bug fixes and performance improvements.… more - 📈Kiren by F-Secure entered the top 100 in 2 chartsAndroidTop Grossing · Tools · AE · Top Grossing · Tools · VN
- 📈Kiren by F-Secure charting in a new country in 2 chartsAndroidUnited Arab Emirates · Vietnam
- ✏️Kiren by F-Secure: description updatedAndroid· US
- ✏️Kiren by F-Secure: short description updatedAndroid· US
- ✏️Kiren by F-Secure: new screenshotsAndroid6 screenshots (was 8) · US
- ✏️Kiren by F-Secure: new iconAndroid
→
· US
- ✏️Kiren by F-Secure: renamedAndroidF-Secure Mobile Security → Kiren by F-Secure · US
- 📦Kiren by F-Secure updated to version 11.1.7iOSThis update makes Kiren Plus setup smoother, improves reliability, and includes bug fixes and performance improvements.
- 📦Kiren by F-Secure updated to version 11.1.6iOSThis update makes Kiren Plus setup smoother, improves reliability, and includes bug fixes and performance improvements.
- 📦Kiren by F-Secure updated to version 11.1.6AndroidF-Secure Mobile Security is now Kiren!
---------
This update makes Kiren Plus setup smoother, improves reliability, and includes bug fixes and performance improvements. - 📈Kiren by F-Secure entered the top 100iOSTop Grossing · Utilities · IN
- 📈Kiren by F-Secure charting in a new countryiOSIndia
- ✏️Kiren by F-Secure dropped 6 languagesiOS− DE − ES − FR − IT − JA − PT
- ✏️Kiren by F-Secure: app got biggeriOS109 MB → 140 MB (+28%)
- ✏️Kiren by F-Secure: needs a newer iOSiOSiOS 13.0 → iOS 18.0
- ✏️Kiren by F-Secure: description updatediOS· DE
- ✏️Kiren by F-Secure: new screenshotsiOS5 screenshots (was 6) · 4 countries
- ✏️Kiren by F-Secure: new iconiOS
→ 
· 4 countries - ✏️Kiren by F-Secure: renamediOSF-Secure Mobile Security → Kiren by F-Secure · 4 countries
- 📈Kiren by F-Secure entered the top 100AndroidTop Grossing · Tools · FR
- 📈Kiren by F-Secure charting in a new countryAndroidFrance
- 📦Kiren by F-Secure: first update in 169 daysiOS
- ✏️Kiren by F-Secure: description updatediOS· JP
- ✏️Kiren by F-Secure: description updatediOS· IT
- ✏️Kiren by F-Secure: description updatediOS· FR
- 📦Kiren by F-Secure updated to version 11.1.5iOSF-Secure Mobile Security is now Kiren. This is a complete redesign built around today's scams. Check links, texts, and images before you act on them. Let Browsing Protection and Message Protection work in the background. Keep watch over your personal data with alerts when it appears in a breach. Your existing subscription carries over. Sign in with the email address you used before and you are protected.… more
- 📈Kiren by F-Secure entered the top 100iOSTop Grossing · Utilities · IT
- 📈Kiren by F-Secure charting in a new countryiOSItaly
- 📈Kiren by F-Secure entered the top 100 in 2 chartsiOSTop Grossing · Utilities · DE · Top Grossing · Utilities · ID
- 📈Kiren by F-Secure charting in a new country in 2 chartsiOSGermany · Indonesia
- 🆕Kiren by F-Secure first spotted by AppInsiderAndroidUnited Kingdom
- 🆕Kiren by F-Secure first spotted by AppInsideriOS#80 in Top Grossing · Utilities · Japan
- 📦Kiren by F-Secure version 10.58-c956ec4Android- Bug fixes and improvements
- 📦Kiren by F-Secure version 6.28.1iOSBug fixes and stability improvements.
- 🆕Kiren by F-Secure released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.6 ★
1.1M ratings, both stores
Measured
Best rank now
#53
Android · 
Tools Grossing
Tools GrossingMeasured
New ratings a week
9.8
▼ -86% vs the 2 weeks before
Measured
App Store
App details
App ID
434893913
Publisher
F-Secure Corporation
Publisher country
Finland
On the store since
Oct 2011
15 years on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
146 MB
Also listed in
Productivity
Google Play
App details
App ID
com.lookout
Publisher
F-Secure Oyj
Publisher country
Finland
Content rating
Everyone
Kiren by F-Secure downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | 10M+ |
| Google Play | 1k+ | 100M+ Measured |
| Total | 1k+ Confidence | 100M+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where Kiren by F-Secure's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend before Apple and Google take their fee.
| Store | Per day | Per month | Share |
|---|---|---|---|
| App Store | |||
| Google Play | |||
| Total | Confidence | 100% |
Business model: Subscription-led
How Kiren by F-Secure makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchases
Subscriptions
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Lookout Premium subscription | |
| 2 | Lookout Premium Plus subscription | |
| 3 | Lookout Premium Plus subscription | |
| 4 | Lookout Premium Plus Trial subscription | |
| 5 | Lookout Premium subscription | |
| 6 | Mobile Security Premium subscription | |
| 7 | Lookout Premium Plus subscription | |
| 8 | Lookout Premium Plus subscription | |
| 9 | Lookout Premium Plus subscription | |
| 10 | Lookout Premium subscription |
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #94 Utilities Grossing | 1 of 30 countries | – | – |
| Google Play | #53 Tools Grossing | 7 of 23 countries | – | #53 |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisApp Store
New ratings a week
9.8
▼ -86% vs the 2 weeks before
Lifetime rating
4.4★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 80% of Utilities apps
New ratings by country (3)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| Japan | 6.8 | 69% | – |
 Germany | 1.5 | 15% | – |
 France | 1.5 | 15% | – |
App Store ratings in the countries we track, 4-week average.
Google Play
New ratings a week
–
Google Play's rating count fell over the last 4 weeks: it removed more ratings than came in (spam clean-ups, deleted accounts), so the pace can't be read right now
Written reviews a week
under 1
Google Play
Lifetime rating
4.1★
recent stars not readable yet: new ratings are a tiny share of the total
Recent written reviews
1.6★
people who write skew negative
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.6 ★ | 893 |
| Google Play | 4.6 ★ | 1.1M 172k written reviews |
| Both stores | 4.6 ★ weighted by ratings | 1.1M |
What users say about Kiren by F-Secure
From the 200 most recent Google Play reviews in the US.
Mostly negative (14% of recent reviews give 4–5 stars). People like it for regular updates, and being easy to use. The main complaints are about price and subscriptions, and recent updates.
What people like
- Updates: “update: Kiren no longer has VPN”
- Ease of use: “GUI design is not as user friendly as before”
- Design: “GUI design is not as user friendly as before”
- Useful: “Now only paid version useful”
Common complaints
- Price & subscription: “DO NOT PAY THEM ANY MONEY”
- Updates: “Just got the Kiren update”
- Features & content: “Features now behind paywall”
- Login & account: “kiren does not work can not log in”
About Kiren by F-Secure
Online scams have never been more convincing. A store that looks real but never ships the order. A text that looks like it comes from your bank. A video of someone who never said those words. These are not aimed only at the careless. They are built to catch anyone, on an ordinary day, in the middle of an ordinary purchase or message.
Kiren is a digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your personal information.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned. Your existing subscription carries over automatically. Sign in with the same email address you used before and your protection is active. There is nothing to buy again and no change in price.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Safari browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Filters scam texts from unknown senders out of your main inbox. Conversations with your contacts are never analyzed.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a device lock is set and that iOS is up to date, the two settings that make the biggest difference to everyday safety.
• Recent News keeps you informed about data breaches and current scams.
SEE IT WORKING
Three screens show the whole picture. Overview gives an at-a-glance read on how well protected you are. Activity shows what has been checked and what has been caught over the past week. You shows which personal details are being watched and whether any have been exposed.
BUILT WITH PRIVACY IN MIND
Sign in with your email address and a one-time code. There is no password to remember. Your browsing events and checked messages are stored locally on your device. Watched persona
Kiren is a digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your personal information.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned. Your existing subscription carries over automatically. Sign in with the same email address you used before and your protection is active. There is nothing to buy again and no change in price.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Safari browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Filters scam texts from unknown senders out of your main inbox. Conversations with your contacts are never analyzed.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a device lock is set and that iOS is up to date, the two settings that make the biggest difference to everyday safety.
• Recent News keeps you informed about data breaches and current scams.
SEE IT WORKING
Three screens show the whole picture. Overview gives an at-a-glance read on how well protected you are. Activity shows what has been checked and what has been caught over the past week. You shows which personal details are being watched and whether any have been exposed.
BUILT WITH PRIVACY IN MIND
Sign in with your email address and a one-time code. There is no password to remember. Your browsing events and checked messages are stored locally on your device. Watched persona
Kiren by F-Secure App Store
Kiren by F-Secure gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Kiren by F-Secure is #94 in Utilities Grossing in Japan and charting in 1 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperF-Secure Corporation
CategoryUtilities
PriceFree
Released
Rating★ 4.6 (893)
Version11.1.11
Age rating4+
First seen by us 24 Sep 2026
24 Sep 2026Installs (est.)10M+ worldwide
Rating
4.6 ★
893 ratings
Measured
Best rank now
#94
Utilities GrossingMeasured
New ratings a week
9.8
▼ -86% vs the 2 weeks before
Measured
Kiren by F-Secure on the App Store
App details
App ID
434893913
Publisher
F-Secure Corporation
Publisher country
Finland
On the store since
Oct 2011
15 years on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
146 MB
Also listed in
Productivity
Kiren by F-Secure downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Kiren by F-Secure's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in Kiren by F-Secure before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: Subscription-led
How Kiren by F-Secure makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchases
Subscriptions
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Lookout Premium subscription | |
| 2 | Lookout Premium Plus subscription | |
| 3 | Lookout Premium Plus subscription | |
| 4 | Lookout Premium Plus Trial subscription | |
| 5 | Lookout Premium subscription | |
| 6 | Mobile Security Premium subscription | |
| 7 | Lookout Premium Plus subscription | |
| 8 | Lookout Premium Plus subscription | |
| 9 | Lookout Premium Plus subscription | |
| 10 | Lookout Premium subscription |
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | UtilitiesGrossing | #94 |
Apps near Kiren by F-Secure on the chart
Utilities Grossing, around #94.
Ratings
App Store, worldwide.
Rating
4.6 ★
893 ratings
Measured
Ratings
893
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
9.8
▼ -86% vs the 2 weeks before
Lifetime rating
4.4★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 80% of Utilities apps
New ratings by country (3)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| Japan | 6.8 | 69% | – |
| Germany | 1.5 | 15% | – |
| France | 1.5 | 15% | – |
App Store ratings in the countries we track, 4-week average.
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Kiren by F-Secure
Online scams have never been more convincing. A store that looks real but never ships the order. A text that looks like it comes from your bank. A video of someone who never said those words. These are not aimed only at the careless. They are built to catch anyone, on an ordinary day, in the middle of an ordinary purchase or message.
Kiren is a digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your personal information.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned. Your existing subscription carries over automatically. Sign in with the same email address you used before and your protection is active. There is nothing to buy again and no change in price.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Safari browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Filters scam texts from unknown senders out of your main inbox. Conversations with your contacts are never analyzed.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a device lock is set and that iOS is up to date, the two settings that make the biggest difference to everyday safety.
• Recent News keeps you informed about data breaches and current scams.
SEE IT WORKING
Three screens show the whole picture. Overview gives an at-a-glance read on how well protected you are. Activity shows what has been checked and what has been caught over the past week. You shows which personal details are being watched and whether any have been exposed.
BUILT WITH PRIVACY IN MIND
Sign in with your email address and a one-time code. There is no password to remember. Your browsing events and checked messages are stored locally on your device. Watched persona
Kiren is a digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your personal information.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned. Your existing subscription carries over automatically. Sign in with the same email address you used before and your protection is active. There is nothing to buy again and no change in price.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Safari browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Filters scam texts from unknown senders out of your main inbox. Conversations with your contacts are never analyzed.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a device lock is set and that iOS is up to date, the two settings that make the biggest difference to everyday safety.
• Recent News keeps you informed about data breaches and current scams.
SEE IT WORKING
Three screens show the whole picture. Overview gives an at-a-glance read on how well protected you are. Activity shows what has been checked and what has been caught over the past week. You shows which personal details are being watched and whether any have been exposed.
BUILT WITH PRIVACY IN MIND
Sign in with your email address and a one-time code. There is no password to remember. Your browsing events and checked messages are stored locally on your device. Watched persona
Latest updates
11.1.11
• Fixed a DNS setting that could stop websites loading.
• Blocked pages now show how to pause Browsing Protection.
11.1.10
What's new in Kiren 11.1.10
• Improved Japanese translations.
• Bug fixes and stability improvements.
11.1.9
What's new in Kiren 11.1.9
• Use Kiren in more languages.
• Clearer results when you check your email for breaches.
• Bug fixes and stability improvements.
Store changes
What Kiren by F-Secure changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Dropped 6 languages
− DE − ES − FR − IT − JA − PT
App got bigger
109 MB → 140 MB (+28%)
Needs a newer iOS
iOS 13.0 → iOS 18.0
More from F-Secure Corporation
Kiren by F-Secure Android
Kiren by F-Secure gets 1k+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Kiren by F-Secure is #53 in Tools Grossing on Google Play in United States and charting in 7 of 23 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperF-Secure Corporation
CategoryTools
PriceFree
Released–
Installs100M+
Rating★ 4.6 (1.1M)
Updated
Content ratingEveryone
Rating
4.6 ★
1.1M ratings
Measured
Best rank now
#53
Tools GrossingMeasured
Kiren by F-Secure on Google Play
App details
App ID
com.lookout
Publisher
F-Secure Oyj
Publisher country
Finland
Content rating
Everyone
Kiren by F-Secure downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where Kiren by F-Secure's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in Kiren by F-Secure before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: Subscription-led
How Kiren by F-Secure makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchases
Subscriptions
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | Lookout Premium subscription | |
| 2 | Lookout Premium Plus subscription | |
| 3 | Lookout Premium Plus subscription | |
| 4 | Lookout Premium Plus Trial subscription | |
| 5 | Lookout Premium subscription | |
| 6 | Mobile Security Premium subscription | |
| 7 | Lookout Premium Plus subscription | |
| 8 | Lookout Premium Plus subscription | |
| 9 | Lookout Premium Plus subscription | |
| 10 | Lookout Premium subscription |
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | ToolsGrossing | #53 |
| Japan | ToolsGrossing | #58 |
 United Kingdom | ToolsGrossing | #53 |
| Germany | ToolsGrossing | #57 |
 Australia | ToolsGrossing | #156 |
 United Arab Emirates | ToolsGrossing | #84 |
 Vietnam | ToolsGrossing | #83 |
Apps near Kiren by F-Secure on the chart
Tools Grossing, around #53.
Ratings
Google Play, worldwide.
Rating
4.6 ★
1.1M ratings
Measured
Ratings
1.1M
Measured
Written reviews
172k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
–
Google Play's rating count fell over the last 4 weeks: it removed more ratings than came in (spam clean-ups, deleted accounts), so the pace can't be read right now
Written reviews a week
under 1
Google Play
Lifetime rating
4.1★
recent stars not readable yet: new ratings are a tiny share of the total
Recent written reviews
1.6★
people who write skew negative
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Kiren by F-Secure
From the 200 most recent Google Play reviews in the US.
Mostly negative (14% of recent reviews give 4–5 stars). People like it for regular updates, and being easy to use. The main complaints are about price and subscriptions, and recent updates.
What people like
- Updates: “update: Kiren no longer has VPN”
- Ease of use: “GUI design is not as user friendly as before”
- Design: “GUI design is not as user friendly as before”
- Useful: “Now only paid version useful”
Common complaints
- Price & subscription: “DO NOT PAY THEM ANY MONEY”
- Updates: “Just got the Kiren update”
- Features & content: “Features now behind paywall”
- Login & account: “kiren does not work can not log in”
About Kiren by F-Secure
Online scams have never been more convincing. A store that looks real but never ships the order. A text that looks like it comes from your bank. A video of someone who never said those words. These are not aimed only at the careless. They are built to catch anyone, on an ordinary day, in the middle of an ordinary purchase or message.
Kiren is a premium digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your identity and your phone.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Your Apps: Analyse your apps to see exactly what they can access, so you can revoke permissions that put your privacy at risk.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Device scan: Antivirus makes it easy to identify, clean & remove viruses from your Android device. It checks new downloads and apps the moment they arrive, runs a daily scan, and removes threats.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Chrome browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Detects scam messages from unknown senders in SMS and WhatsApp, and gathers the harmful ones in one place. Conversations with your contacts are never analyzed.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a screen lock is set, the first line of defense if your phone is lost or stolen.
• Your Apps shows what each installed app can access, such as the camera, microphone, location, and contacts. An app with more access than it needs stands out.
• Recent News keeps you informed about data breaches and current scams.
BUILT WITH PRIVACY IN MIND
Your browsing events, checked messages, and app analysis are stored locally on your device.
FREE AND PLUS
Kiren Free includes Link Checker, Message Checke
Kiren is a premium digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your identity and your phone.
F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned.
CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Your Apps: Analyse your apps to see exactly what they can access, so you can revoke permissions that put your privacy at risk.
• Quick Access to find, lock or wipe your lost device.
PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Device scan: Antivirus makes it easy to identify, clean & remove viruses from your Android device. It checks new downloads and apps the moment they arrive, runs a daily scan, and removes threats.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Chrome browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Detects scam messages from unknown senders in SMS and WhatsApp, and gathers the harmful ones in one place. Conversations with your contacts are never analyzed.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.
KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a screen lock is set, the first line of defense if your phone is lost or stolen.
• Your Apps shows what each installed app can access, such as the camera, microphone, location, and contacts. An app with more access than it needs stands out.
• Recent News keeps you informed about data breaches and current scams.
BUILT WITH PRIVACY IN MIND
Your browsing events, checked messages, and app analysis are stored locally on your device.
FREE AND PLUS
Kiren Free includes Link Checker, Message Checke
What's new in 11.1.10
What's new in Kiren 11.1.10
• Improved Japanese translations.
• Bug fixes and stability improvements.
• Improved Japanese translations.
• Bug fixes and stability improvements.
Store changes
What Kiren by F-Secure changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
Short description updated
New screenshots
6 screenshots (was 8)