# MAAARK vs おたよりカレンダー

The clearest difference is in-app purchases: MAAARK at none against おたよりカレンダー's 2. MAAARK also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). おたよりカレンダー's advantage is update cadence (every 3 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. おたよりカレンダー sells 2 one-off in-app purchases. MAAARK asks for nothing beyond the download.

MAAARK ships an update every 3 weeks, おたよりカレンダー every 3 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | MAAARK | おたよりカレンダー |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 22 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [naoki futamachi](https://appshunter.io/developer/1678289850) | [KUREHO](https://appshunter.io/developer/1884942706) |

## What reviewers say

### MAAARK

[App page](https://appshunter.io/ios/app/maaark/id6760365734)

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

**In-app purchases:** none


### おたよりカレンダー

[App page](https://appshunter.io/ios/app/id6767889790)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Plus | $9.99 | one-time |


## Frequently asked questions

### Is MAAARK free?

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

### Is おたよりカレンダー free?

おたよりカレンダー is free to download, with in-app purchases available.

### Do MAAARK or おたよりカレンダー have ads?

おたよりカレンダー shows ads; MAAARK does not.

### Which is updated more often, MAAARK or おたよりカレンダー?

MAAARK ships an update every 3 weeks, and おたよりカレンダー every 3 days. Most recently, MAAARK was updated on October 28, 2026 and おたよりカレンダー on October 25, 2026.

---

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