# Check Calendar - Habit Tracker

Android app · by Naoki Otsu · Productivity

Topics: Habit tracker

Check Calendar - Habit Tracker has 702,927 installs (+2.1% in the 30 days to 2026-10-31), rated 4.4 from 12,754 ratings, \#2,424 of 183,007 in Productivity.

## Figures

- Installs: 702,927
- Rating: 4.4 · 12,754 ratings
- Price: Free
- In-app purchases: yes
- 7-day growth in installs: +2,810 (+0.4%) (+6,303 over 15.7 days)
- 30-day growth in installs: +14,599 (+2.1%)
- Rank: #71,260 of 2,903,086 Android listings with an install count (down 2,272 since 2026-11-01)
- Rank: #2,424 of 183,007 in Productivity

## Is Check Calendar - Habit Tracker safe?

StoreTally doesn't rate safety. Here's what the store and our tracking show:

- Listed on Google Play.
- Made by Naoki Otsu; developer website listed: checkcalendar.app.
- On Google Play since 2021-05-01. Last updated 2026-10-28.
- Rated 4.4 from 12,754 ratings.

## Reviews

- Ratings by stars: 5★ 77% · 4★ 11% · 3★ 1% · 2★ 1% · 1★ 11% (12,695 ratings)

## Description

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.  
info@checkcalendar.app

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Source: https://storetally.com/android/com.checkcalendarapp  
As of 2026-11-11, from the StoreTally census.