# Check Calendar vs Chek!

The clearest difference is in-app purchases: Chek! at none against Check Calendar's 1. Check Calendar's advantage is ads (none vs shown) and update cadence (every 4 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Check Calendar sells 1 one-off in-app purchase. Chek! asks for nothing beyond the download.

Check Calendar ships an update every 4 days, Chek! every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Check Calendar | Chek! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.6K ratings)](https://appshunter.io/ios/app/check-calendar-habit-tracker/id1563837295/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 53.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 28 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [naoki otsu](https://appshunter.io/developer/1082476153) | [Juan Damian Felix](https://appshunter.io/developer/1692120512) |

## What reviewers say

### Check Calendar

[App page](https://appshunter.io/ios/app/check-calendar-habit-tracker/id1563837295)

Track your daily habits by marking them on a calendar with one-tap check-offs. Customize your experience with notes, unlimited categories, emojis, and color themes. Visualize progress with reports and receive timely notifications to stay on track.

**Highlights:** One-tap calendar check-offs, Unlimited habit categories, Customizable emojis and colors, Progress reports and graphs, Notifications and reminders, Data backup and restore, Widget support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

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

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


### Chek!

[App page](https://appshunter.io/ios/app/chek/id6790214225)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Check Calendar free?

Check Calendar is free to download, with in-app purchases available.

### Is Chek! free?

Chek! is free to download, with no in-app purchases.

### Do Check Calendar or Chek! have ads?

Chek! shows ads; Check Calendar does not.

### Which is updated more often, Check Calendar or Chek!?

Check Calendar ships an update every 4 days, and Chek! every 3 weeks. Most recently, Check Calendar was updated on October 30, 2026 and Chek! on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*