Check Calendar Downloads & RevenueCheck Calendar - Habit Tracker · App Store & Google Play
Check Calendar - Habit Tracker by naoki otsu is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Check Calendar - Habit Tracker update history & changes
Last change · 7 events since 27 Apr 2021Full timeline ↓🆕AndroidFirst spotted by AppInsider📦AndroidVersion 14.53.1📦iOSUpdated to version 14.53.0🆕iOSFirst spotted by AppInsider📦iOSVersion 14.52.0🆕AndroidReleased on Google Play🆕iOSReleased on the App Store
Full timeline · 7 events
- 🆕Check Calendar - Habit Tracker first spotted by AppInsiderAndroidUnited States (found via search)
- 📦Check Calendar - Habit Tracker version 14.53.1Android- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].… more - 📦Check Calendar - Habit Tracker updated to version 14.53.0iOS- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].… more - 🆕Check Calendar - Habit Tracker first spotted by AppInsideriOSUnited States (found via search)
- 📦Check Calendar - Habit Tracker version 14.52.0iOS- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].… more - 🆕Check Calendar - Habit Tracker released on Google PlayAndroid
- 🆕Check Calendar - Habit Tracker 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
4.5 ★
14k ratings, both stores
Measured
App Store
App details
App ID
1563837295
Publisher
Naoki Otsu
Publisher country
Japan
On the store since
Apr 2021
5 years on the store
Minimum OS
iOS 15.1+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
24
CS DA NL EN FR DE HI HU ID IT JA KO …
Size
61 MB
Also listed in
Lifestyle
Google Play
App details
App ID
com.checkcalendarapp
Publisher
NAOKI OTSU
Publisher country
Japan
Content rating
Everyone
Check Calendar - Habit Tracker downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | – |
| Google Play | – | 500k+ Measured |
| Total | – | 500k+ 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: In-app purchase-led
How Check Calendar - Habit Tracker makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 1 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 | 4.7 ★ | 1.6k |
| Google Play | 4.4 ★ | 13k 110 written reviews |
| Both stores | 4.5 ★ weighted by ratings | 14k |
About Check Calendar - Habit Tracker
Check Calendar is an app that lets you track your habits by marking them off on a calendar.
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
Check Calendar - Habit Tracker App Store
Not in any tracked top chart right now.
Updated 3 Nov 2026 · rankings refresh through the day
Developernaoki otsu
CategoryProductivity
PriceFree
Released
Rating★ 4.7 (1.6k)
Version14.53.2
Age rating4+
First seen by us
21 Oct 2026
21 Oct 2026Rating
4.7 ★
1.6k ratings
Measured
Check Calendar - Habit Tracker on the App Store
App details
App ID
1563837295
Publisher
Naoki Otsu
Publisher country
Japan
On the store since
Apr 2021
5 years on the store
Minimum OS
iOS 15.1+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
24
CS DA NL EN FR DE HI HU ID IT JA KO …
Size
61 MB
Also listed in
Lifestyle
Check Calendar - Habit Tracker 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 Check Calendar - Habit Tracker 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: In-app purchase-led
How Check Calendar - Habit Tracker makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 1 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
4.7 ★
1.6k ratings
Measured
Ratings
1.6k
Measured
About Check Calendar - Habit Tracker
Check Calendar is an app that lets you track your habits by marking them off on a calendar.
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
Latest updates
14.53.2
- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].
14.53.0
- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].
14.52.0
- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].
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NameNotes - Take Note of Names
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Check Calendar - Habit Tracker Android
Not in a tracked Google Play top chart right now.
Updated 3 Nov 2026 · rankings refresh through the day
DeveloperNaoki Otsu
CategoryProductivity
PriceFree
Released
Installs500k+
Rating★ 4.4 (13k)
Updated
Content ratingEveryone
Rating
4.4 ★
13k ratings
Measured
Check Calendar - Habit Tracker on Google Play
App details
App ID
com.checkcalendarapp
Publisher
NAOKI OTSU
Publisher country
Japan
Content rating
Everyone
Check Calendar - Habit Tracker 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 Check Calendar - Habit Tracker 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: In-app purchase-led
How Check Calendar - Habit Tracker makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 1 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
4.4 ★
13k ratings
Measured
Ratings
13k
Measured
Written reviews
110
Measured
About Check Calendar - Habit Tracker
Check Calendar is an app that lets you track your habits by marking them off on a calendar.
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
It's packed with features like one-tap check-offs, notes, unlimited tabs, emojis, reports, notifications, backup & restore, widgets, dark mode, and more.
■ Check off on the calendar
Track your habits by checking them off on the calendar with a single tap.
■ Notes
Supports both short and long notes! Write freely to keep your records.
■ Unlimited tabs
Create unlimited categories like "Workout," "Study," and "Reading."
■ Emojis
Change your checkmark to any emoji you like.
■ Checkmark color
Change your checkmark to any color you like.
■ Reports
Visualize your habit progress with graphs. You can freely change the time range, such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View your check-off history, a list of past notes, and more.
■ Notifications
Send notifications at any time with any message you choose. Use them so you never forget your habits.
■ Backup / Restore
Automatically back up and restore your data. You can transfer your data even across different devices.
■ Widget
Check off on the calendar and view your totals right from the widget, without opening the app.
You can also use the report widget to quickly check your cumulative, this month, and last month check-off counts.
■ Dark mode
Choose your theme from "Light mode," "Dark mode," or "Switch automatically based on device settings."
■ Color theme
Change the background color to any color you like.
■ Archive
Hide calendars you don't want to see by archiving them.
■ Biometric authentication
Supports Face ID and Touch ID. Keep your important records safe and secure.
■ CSV export
Export an individual calendar or all of your data in CSV format.
■ Check count
Freely set how many times you can check off per day.
■ Security
Your data is stored only on your device. It is never sent to third parties.
■ No login required
Start using the app right away without signing in.
■ Offline support
Works even without an internet connection.
■ Privacy Policy
https://checkcalendar.app/privacy-policy
■ Contact
If you have any requests or questions, please feel free to reach out through the in-app contact form or via the email address below.
[email protected]
What's new in 14.53.1
- The latest version includes new features, bug fixes, and performance improvements.
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].
Thank you for always using our app.
We will continue to develop it with the valuable feedback from everyone.
If you have any requests or encounter any issues, please feel free to contact us through "Send Feedback" in the app settings or at [email protected].