# Check Calendar - Habit Tracker — Check your habit calendar!

> Calendar-based habit tracker with notes, reports, and customizable features. (iPhone/iPad app by naoki otsu.)

- Source: https://appshunter.io/ios/app/check-calendar-habit-tracker/id1563837295 (this page in markdown: same URL + `.md`)
- Developer: [naoki otsu](https://appshunter.io/developer/1082476153)
- Category: Productivity, Lifestyle
- Price: Free with in-app purchases
- Rating: 4.70/5 from 1,446 App Store ratings · 200 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 58 MB
- Languages: Russian, Hindi, Vietnamese, American English, Hungarian, Dutch, Danish, Indonesian, European Spanish, Italian and 14 more
- Released: 2021-04-27
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/check-calendar-habit-tracker/id1563837295/reviews.md

## What is Check Calendar?

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

## Key features

- One-tap calendar checks
- Add notes to entries
- Unlimited habit categories
- Customizable emojis
- Progress reports and graphs
- Daily reminders
- Biometric authentication

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium (Pay Once) | $4.99 | one-time |


## What do users think of Check Calendar?

Overall sentiment: neutral

**Pros**

- 👍 Simple and easy to use
- ✅ Effective for tracking habits
- 📅 Convenient calendar view
- 🎨 Customizable icons and emojis

**Cons**

- 💰 Paid app with limited free trial
- 🔒 Lack of free version options
- 🔄 Data loss on device change
- 🤔 Unclear pricing and subscription model

**Commonly reported bugs**

- Inconsistent date tracking
- Syncing issues between devices
- Unexpected loss of data and progress

**Most requested features**

- Add widget support
- Implement reminder/notification system
- Provide more data visualization and analytics
- Allow selective clearing of check marks

## Recent user reviews (10 of 200)

All indexed reviews: https://appshunter.io/ios/app/check-calendar-habit-tracker/id1563837295/reviews.md

### 5/5 — Best tool to track my activities

*2026-08-12, version 14.47.0*

I’ve been using the app for over two years now to track my activities and it works perfectly for me. Even though I have a smart watch it doesn’t provide such reporting as this app. Fun, simple, functional.

### 1/5 — Can’t even use basic functionality without paying

*2026-07-29*

Asking for premium that costs ₹500 just to do the most basic task that is click to mark a date. This is literally the simplest an app can get. Uninstalled this and created my own in 10 mins with Claude.

### 5/5 — Super

*2026-07-29, version 14.47.0*

Pour ceux qui aime tout ecrire et bien organiser les archives cette app est kool et tu paye juste une fois ensuite tu la a vie.

### 5/5 — Great!

*2026-07-20, version 14.43.0*

Simple, easy to use, and does exactly what it’s supposed to do.

### 5/5 — I love the app.

*2026-07-11*

I strictly use it to keep track of my day to day movement. It’s an accountability check. 

If you look at your month and you’re not happy, then the next month you make sure you visually can see that change. The app does this.

### 3/5 — Not free

*2026-07-01, version 14.38.0*

The app shows that it is free until a week then it says you have to pay 6 dollars after I already did a lot of stuff with the app

### 5/5 — Awesome simple calendar

*2026-06-19, version 14.33.0*

I love this! It is so simple and straight forward, just what I needed. No ads or cost to use this app, thanks to the generous creators of this app. I LOVE IT

### 5/5 — 課金する意義がある

*2026-06-18*

UIがシンプルなので、直感的に使い方が分かりやすい。
以前ダイエットの習慣化のために課金して、目標達成後放置していた。久々に運動習慣を定着させるために立ち上げても迷うことなく使えた。かなり使いやすいと思う。

### 1/5 — Have to pay

*2026-06-10, version 14.30.0*

You have to pay to use the app at all

### 5/5 — Good app

*2026-06-10, version 14.30.0*

I’m happy with this app and it tracking and data capabilities

## Frequently asked questions about Check Calendar

### What does Check Calendar do?

Check Calendar is a habit tracking application that allows users to mark their progress directly on a calendar interface. It supports adding notes to each entry, creating unlimited habit categories, and visualizing progress through reports and graphs.

### What are the key features of this habit tracker?

Key features include one-tap calendar checks, the ability to add detailed notes, unlimited habit tabs for organization, customizable emojis for checkmarks, progress reports with various time periods, and reminders to prevent forgetting habits. It also offers data backup, dark mode, and biometric authentication for security.

### Is Check Calendar free to use?

The application is free to download and use, offering core habit tracking functionalities. It includes in-app purchases, suggesting that some advanced features or customization options may require a purchase.

### What devices is Check Calendar compatible with?

The app description does not explicitly state compatibility with specific operating systems (iOS or Android) or device types. However, features like biometric authentication (Face ID, Touch ID) and dark mode suggest compatibility with modern smartphones and tablets.

### How can I use Check Calendar to build better habits?

You can use Check Calendar by setting up your desired habits and categories, then tapping on the calendar each day you complete them. The app's visual calendar, notes, and reports help you stay motivated and identify patterns. Reminders can also be set to ensure consistency.

## Version history (last 5 releases)

### 14.47.0 — 2026-07-24

- 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 info@naokiotsu.com.

### 14.46.0 — 2026-07-20

- 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 info@naokiotsu.com.

### 14.43.0 — 2026-07-16

- 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 info@naokiotsu.com.

### 14.42.0 — 2026-07-08

- 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 info@naokiotsu.com.

### 14.40.0 — 2026-07-06

- 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 info@naokiotsu.com.

## Apps similar to Check Calendar

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Habit Tracker](https://appshunter.io/ios/app/habit-tracker/id1438388363) | 4.8 (145,477) | Free | Productivity |
| [Habit Tracker - Evoday](https://appshunter.io/ios/app/habit-tracker-evoday/id1403517519) | 4.8 (1,364) | Free | Productivity |
| [Structured: Daily Planner Todo](https://appshunter.io/ios/app/structured-daily-planner-todo/id1499198946) | 4.8 (164,432) | Free | Productivity |
| [Habit-Bull: Daily Goal Planner](https://appshunter.io/ios/app/habit-bull-daily-goal-planner/id1041482672) | 4.7 (8,133) | Free | Productivity |
| [TickTick:To-Do List & Calendar](https://appshunter.io/ios/app/ticktickto-do-list-and-calendar/id626144601) | 4.9 (45,223) | Free | Productivity |
| [Daily Habit & Routine Tracker](https://appshunter.io/ios/app/daily-habit-and-routine-tracker/id1477345602) | 4.6 (4,685) | Free | Productivity |

## More apps by naoki otsu

- [ToDo for Google - Manage tasks](https://appshunter.io/ios/app/todo-for-google-manage-tasks/id1616380685)
- [Habit Check Calendar](https://appshunter.io/ios/app/habit-check-calendar/id1629764198)
- [Daily Checklist - Today's Task](https://appshunter.io/ios/app/daily-checklist-todays-task/id1645796637)
- [LinkList - Open Links Quickly](https://appshunter.io/ios/app/linklist-open-links-quickly/id1670836727)
- [PrepChecklist - To-Do List](https://appshunter.io/ios/app/prepchecklist-to-do-list/id6463404844)

All apps by naoki otsu: https://appshunter.io/developer/1082476153

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*