The 21 Days Challenge Downloads & RevenueThe 21 Days Challenge · App Store & Google Play
The 21 Days Challenge by Kati Pereira is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
The 21 Days Challenge update history & changes
Last change · 8 events since 4 Sep 2019Full timeline ↓📈AndroidDropped out of every chart we track📈iOSDropped out of every chart we track🆕iOSFirst spotted by AppInsider📦iOSVersion 8.7.30🆕AndroidFirst spotted by AppInsider📦AndroidVersion 8.7.23🆕iOSReleased on the App Store🆕AndroidReleased on Google Play
Full timeline · 8 events
- 📈The 21 Days Challenge dropped out of every chart we trackAndroidLast seen 26 Oct
- 📈The 21 Days Challenge dropped out of every chart we trackiOSLast seen 25 Oct
- 🆕The 21 Days Challenge first spotted by AppInsideriOS#65 in Top Free · Lifestyle · India
- 📦The 21 Days Challenge version 8.7.30iOSRunning smoother
Under-the-hood updates for a steadier app, plus small fixes.
"Begin at once to live, and count each separate day as a separate life." — Seneca - 🆕The 21 Days Challenge first spotted by AppInsiderAndroidIndia
- 📦The 21 Days Challenge version 8.7.23Android✨ Smoother and steadier
Behind-the-scenes improvements to keep your days running smoothly, in all 11 languages.
"We are what we repeatedly do. Excellence, then, is not an act, but a habit." — Will Durant - 🆕The 21 Days Challenge released on the App StoreiOS
- 🆕The 21 Days Challenge released on Google PlayAndroid
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
93k ratings, both stores
Measured
App Store
App details
App ID
1485458184
Publisher
Kati Pereira
Publisher country
Portugal
On the store since
Nov 2019
6 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
133 MB
Also listed in
Productivity
Google Play
App details
App ID
com.limatech.dayschallenge.dayschallenge
Publisher
Kati Araujo Pereira
Publisher country
Portugal
Content rating
Everyone
The 21 Days Challenge downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | 100k+ |
| Google Play | – | 10M+ Measured |
| Total | – | 10M+ 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.
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: Ad-led
How The 21 Days Challenge makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 5 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | – | 0 of 30 countries | – | – |
| Google Play | – | 0 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.8 ★ | 649 |
| Google Play | 4.7 ★ | 92k 2.9k written reviews |
| Both stores | 4.7 ★ weighted by ratings | 93k |
About The 21 Days Challenge
Create your ideal life with life changing habits.
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students, ways to spread kindness and positivity, tips for fixing your sleeping schedule and daily positive affirmations are some of the challenges that you can find in the app.
Once you complete your daily task, you can mark as completed and collect the points (to customize your avatar). This way, you can use this app like a habit tracker.
In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favorite ones.
Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes.
Create a healthier and happier mind with journaling. With this app you can daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
You also a have a selection of positive wallpapers for your phone.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
Don’t forget to take care of your body and mind. It's the only place you have to live.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students, ways to spread kindness and positivity, tips for fixing your sleeping schedule and daily positive affirmations are some of the challenges that you can find in the app.
Once you complete your daily task, you can mark as completed and collect the points (to customize your avatar). This way, you can use this app like a habit tracker.
In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favorite ones.
Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes.
Create a healthier and happier mind with journaling. With this app you can daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
You also a have a selection of positive wallpapers for your phone.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
Don’t forget to take care of your body and mind. It's the only place you have to live.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
The 21 Days Challenge App Store
Not in any tracked top chart right now.
Updated 2 Nov 2026 · rankings refresh through the day
DeveloperKati Pereira
CategoryLifestyle
PriceFree
Released
Rating★ 4.8 (649)
Version8.7.30
Age rating4+
First seen by us
26 Oct 2026
26 Oct 2026Installs (est.)100k+ worldwide
Rating
4.8 ★
649 ratings
Measured
The 21 Days Challenge on the App Store
App details
App ID
1485458184
Publisher
Kati Pereira
Publisher country
Portugal
On the store since
Nov 2019
6 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
133 MB
Also listed in
Productivity
The 21 Days Challenge 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.
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 The 21 Days Challenge before Apple and Google take their fee.
How this is calculated
Not on any Top Grossing chart: monthly active users × spend per user for its category, measured on the charted apps nearest the bottom of the charts.
Business model: Ad-led
How The 21 Days Challenge makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 5 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.8 ★
649 ratings
Measured
Ratings
649
Measured
About The 21 Days Challenge
Create your ideal life with life changing habits.
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students, ways to spread kindness and positivity, tips for fixing your sleeping schedule and daily positive affirmations are some of the challenges that you can find in the app.
Once you complete your daily task, you can mark as completed and collect the points (to customize your avatar). This way, you can use this app like a habit tracker.
In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favorite ones.
Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes.
Create a healthier and happier mind with journaling. With this app you can daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
You also a have a selection of positive wallpapers for your phone.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
Don’t forget to take care of your body and mind. It's the only place you have to live.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students, ways to spread kindness and positivity, tips for fixing your sleeping schedule and daily positive affirmations are some of the challenges that you can find in the app.
Once you complete your daily task, you can mark as completed and collect the points (to customize your avatar). This way, you can use this app like a habit tracker.
In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favorite ones.
Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes.
Create a healthier and happier mind with journaling. With this app you can daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
You also a have a selection of positive wallpapers for your phone.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
Don’t forget to take care of your body and mind. It's the only place you have to live.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Latest updates
8.7.30
Running smoother
Under-the-hood updates for a steadier app, plus small fixes.
"Begin at once to live, and count each separate day as a separate life." — Seneca
21 Days Challenge Android
Not in a tracked Google Play top chart right now.
Updated 2 Nov 2026 · rankings refresh through the day
DeveloperKati & Lima
CategoryLifestyle
PriceFree
Released
Installs10M+
Rating★ 4.7 (92k)
Updated
Content ratingEveryone
Rating
4.7 ★
92k ratings
Measured
21 Days Challenge on Google Play
App details
App ID
com.limatech.dayschallenge.dayschallenge
Publisher
Kati Araujo Pereira
Publisher country
Portugal
Content rating
Everyone
21 Days Challenge 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.
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 21 Days Challenge before Apple and Google take their fee.
How this is calculated
Not on any Top Grossing chart: monthly active users × spend per user for its category, measured on the charted apps nearest the bottom of the charts.
Business model: Ad-led
How 21 Days Challenge makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 5 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Not in a Google Play top chart right now. | ||
Ratings
Google Play, worldwide.
Rating
4.7 ★
92k ratings
Measured
Ratings
92k
Measured
Written reviews
2.9k
Measured
About 21 Days Challenge
Create your ideal life with life-changing habits.
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you (or create your own) and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, learning a new language, trying to be more productive, finding happiness, self-help, how to study effectively, ways to spread kindness and positivity, tips for fixing your sleeping schedule, self-care practices, decluttering, being more confident, writing journal prompts and daily positive affirmations are some of the challenges that you can find in the app.
Basically, you can use this app as a habit tracker.
Once you complete your daily task, you can mark it as completed and collect the points (to customize your avatar, to unlock motivational reminders and free wallpapers).
In the gratitude challenge, you can write your thoughts and share them in the feed (it can be anonymous too). Here you're going to see all the community answers and you can also give it a like, comment, or send gifts to your favorite ones.
Create a healthier and happier mind with journaling. With this app, you can write a daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
There’s a selection of positive wallpapers for your phone and motivational reminders to share with your friends. Also, some relaxing music.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
You have all of this in one app for free!
Don’t forget to take care of your body and mind. It's the only place you have to live.
Your journey to self-improvement and better mental health starts today!
It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you (or create your own) and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.
Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, learning a new language, trying to be more productive, finding happiness, self-help, how to study effectively, ways to spread kindness and positivity, tips for fixing your sleeping schedule, self-care practices, decluttering, being more confident, writing journal prompts and daily positive affirmations are some of the challenges that you can find in the app.
Basically, you can use this app as a habit tracker.
Once you complete your daily task, you can mark it as completed and collect the points (to customize your avatar, to unlock motivational reminders and free wallpapers).
In the gratitude challenge, you can write your thoughts and share them in the feed (it can be anonymous too). Here you're going to see all the community answers and you can also give it a like, comment, or send gifts to your favorite ones.
Create a healthier and happier mind with journaling. With this app, you can write a daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records.
There’s a selection of positive wallpapers for your phone and motivational reminders to share with your friends. Also, some relaxing music.
Enable notifications and choose the time to be notified to remind you to do the challenge every day.
You have all of this in one app for free!
Don’t forget to take care of your body and mind. It's the only place you have to live.
Your journey to self-improvement and better mental health starts today!
What's new in 8.7.23
✨ Smoother and steadier
Behind-the-scenes improvements to keep your days running smoothly, in all 11 languages.
"We are what we repeatedly do. Excellence, then, is not an act, but a habit." — Will Durant
Behind-the-scenes improvements to keep your days running smoothly, in all 11 languages.
"We are what we repeatedly do. Excellence, then, is not an act, but a habit." — Will Durant