Check Calendar - Habit Tracker
Check Calendar - Habit Tracker Summary
Check Calendar - Habit Tracker is a ad-supported, with in-app purchases Android app in the Productivity category, developed by Naoki Otsu. First released 4 years ago(Apr 2021), the app has accumulated 543.8K+ total installs and 10K ratings with a 4.17★ (good) average rating.
Recent activity: 3.8K installs this week (18.2K over 4 weeks) showing steady growth , and 80 new ratings this week (430 over 4 weeks) with stable momentum. View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Jan 26, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Jan 23, 2026.
Store info: Last updated on Google Play on Dec 17, 2025 (version 312).
Check Calendar - Habit Tracker was last scanned for SDKs 2026-01-26. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Facebook
Square
React Native
BouncyCastle
Google
RevenueCat
Firebase4.17★
Ratings: 10K
Screenshots
App Description
Powerful habit tracking app with calendar, analytics, 1000+ emojis and reports
Check Calendar lets you tick your calendar to record habits.
It packs one-tap checks, notes, unlimited tabs, emojis, reports, notifications, backup/restore, dark mode, and more.
■ Check on the calendar
Record habits with a single tap on the calendar.
■ Notes
Supports short or long notes—write freely and keep everything.
■ Unlimited tabs
Create limitless categories like "Workout," "Study," or "Reading."
■ Emojis
Change checkmarks to any emoji you like.
■ Reports
Visualize habit progress with graphs. Switch periods such as "Last 7 days," "Last 28 days," or "Last 6 months."
■ History
View check history and past note lists in one place.
■ Notifications
Send reminders with your preferred message at your preferred time to prevent forgetting habits.
■ Backup/Restore
Automatically back up and restore data, even when moving to a different device.
■ Dark mode
Choose from Light mode, Dark mode, or Auto based on device settings.
■ Color themes
Change the background to any color you like.
■ Archive
Hide calendars you don't want to display.
■ Biometric authentication
Supports Face ID and Touch ID to protect your valuable records.
■ CSV export
Export individual calendars or all data in CSV format.
■ Check count
Set how many times per day you can check.
■ Security
Data is stored only on your device and 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
info@checkcalendar.app