# Event Mark vs Check Calendar

The clearest difference is in-app purchases: Event Mark at none against Check Calendar's 2. Event Mark also leads on ads (none vs shown). Check Calendar's advantage is update cadence (every 5 days vs every 3 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Check Calendar sells 2 in-app purchases, starting at $2.49 per month. Event Mark asks for nothing beyond the download.

Event Mark ships an update every 3 months, Check Calendar every 5 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Event Mark | Check Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (17 ratings)](https://appshunter.io/ios/app/check-calendar-habit-builder/id6480355181/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 81.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 82 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Evgenii Fishbein](https://appshunter.io/developer/1719806505) | [Kodai Watanabe](https://appshunter.io/developer/1721192265) |

## What reviewers say

### Event Mark

[App page](https://appshunter.io/ios/app/event-mark/id6479938370)

**Features:** macOS Compatibility

**In-app purchases:** none


### Check Calendar

[App page](https://appshunter.io/ios/app/check-calendar-habit-builder/id6480355181)

This app helps you build life-changing habits through a simple checklist calendar. Organize daily tasks, track routines, and visualize your progress to achieve your personal growth goals.

**Highlights:** Simple checklist calendar interface, Routine planner for self-improvement, Visual progress tracking, Emoji personalization for habits, Easy swipe access between habits, Calendar overview for date selection and editing

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Habit Calendar Premium | $2.49 | per month |
| Habit Calendar Premium | $11.99 | per year |


## Frequently asked questions

### Is Event Mark free?

Event Mark is free to download, with no in-app purchases.

### Is Check Calendar free?

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

### Do Event Mark or Check Calendar have ads?

Check Calendar shows ads; Event Mark does not.

### Which is updated more often, Event Mark or Check Calendar?

Event Mark ships an update every 3 months, and Check Calendar every 5 days. Most recently, Event Mark was updated on November 4, 2026 and Check Calendar on October 30, 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.*