Check Calendar - Habit Tracker
Check Calendar - Habit Tracker is made and published by naoki otsu. AppBrain is an independent app data site and isn't affiliated with naoki otsu. The app name, icon, screenshots and description belong to naoki otsu and are shown as published on the App Store.
AppBrain's verdict
EstablishedLoved by users- Rating on App Store
- 4.74
- 1,565 ratings
- Last updated
- October 28, 2026
- Size
- 58.3 MB
Users love it: 4.7 stars from 1,565 ratings.
User feedback
Ratings and reviews on the App StoreComments on Check Calendar - Habit Tracker for iOS
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Store listing
By naoki otsu, from the App StoreDescription by naoki otsu Written by the developer, not by AppBrain. Click to read.
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.
info@checkcalendar.app
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 58.3 MB
- Content rating
- Everyone
Technologies used by Check Calendar - Habit Tracker
Releases
Updates seen on the App Store- Version
- 14.53.2
- Launched
- April 2021
No changelog data
Alternatives
Similar apps and more from naoki otsuRankings
App Store top chartsApp Store Rankings for Check Calendar - Habit Tracker
About the app and developer
About Check Calendar - Habit Tracker
Check Calendar - Habit Tracker is a productivity app developed by naoki otsu.
User Ratings
Check Calendar - Habit Tracker is rated 4.74 out of 5 stars. The rating is based on 1.6 thousand ratings.
App Information
Check Calendar - Habit Tracker is freely available from the App Store. The app size is 58.33 MB. The latest version available is 14.53.2. The last update was on October 28, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since April 2021.
Developer information for naoki otsu
Address:
Frequently asked questions about Check Calendar - Habit Tracker
Is Check Calendar - Habit Tracker free?
Yes. Check Calendar - Habit Tracker is free on the App Store.
Is Check Calendar - Habit Tracker still available?
Yes. Check Calendar - Habit Tracker is on the App Store, and the last update we saw was on October 28, 2026.
How large is Check Calendar - Habit Tracker?
Check Calendar - Habit Tracker is 58.33 MB.
Is Check Calendar - Habit Tracker suitable for children?
App Store rates the content of Check Calendar - Habit Tracker as suitable for everyone.
How do people rate Check Calendar - Habit Tracker?
Check Calendar - Habit Tracker scores 4.74 out of 5 stars, from 1,565 ratings on the App Store.
Who made Check Calendar - Habit Tracker?
Check Calendar - Habit Tracker was developed by naoki otsu. It is listed in the productivity category on the App Store.
What are the best alternatives to Check Calendar - Habit Tracker?
People looking at Check Calendar - Habit Tracker also look at these productivity apps: Mark Off: Calendar & Tracker, DayStamp - Habit Tracker, Evoday: Habit Tracker, Don't Break The Chain!, Daily Habits - Habit Tracker.
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