# merge マージ vs Calla　公式アプリ

The clearest difference is update cadence: merge マージ at every 6 months against Calla　公式アプリ's every 38 months. Calla　公式アプリ's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

merge マージ ships an update every 6 months, Calla　公式アプリ every 38 months. The most recent releases landed on October 14, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | merge マージ | Calla　公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 38 months |
| Size | 81 MB | 28 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [hiromichi okabayashi](https://appshunter.io/developer/1320732273) | [TAKAHIRO MORITA](https://appshunter.io/developer/1655266317) |

## What reviewers say

### merge マージ

[App page](https://appshunter.io/ios/app/merge/id1228030228)

**Features:** Apple Wallet

**In-app purchases:** none


### Calla　公式アプリ

[App page](https://appshunter.io/ios/app/calla/id6444546781)

**In-app purchases:** none


## Frequently asked questions

### Is merge マージ free?

merge マージ is free to download, with no in-app purchases.

### Is Calla　公式アプリ free?

Calla　公式アプリ is free to download, with no in-app purchases.

### Do merge マージ or Calla　公式アプリ have ads?

Neither merge マージ nor Calla　公式アプリ shows ads.

### Which is updated more often, merge マージ or Calla　公式アプリ?

merge マージ ships an update every 6 months, and Calla　公式アプリ every 38 months. Most recently, merge マージ was updated on October 14, 2026 and Calla　公式アプリ on September 14, 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.*