# こいぶみ｜手紙と交換日記のカップルアプリ vs Coteka

The clearest difference is ads: こいぶみ｜手紙と交換日記のカップルアプリ at none against Coteka's shown. こいぶみ｜手紙と交換日記のカップルアプリ also leads on update cadence (every 4 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

こいぶみ｜手紙と交換日記のカップルアプリ ships an update every 4 days, Coteka every 3 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | こいぶみ｜手紙と交換日記のカップルアプリ | Coteka |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 116 MB | 44 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shunya Iwasaki](https://appshunter.io/developer/1796095304) | [Chamshot, Inc.](https://appshunter.io/developer/6788812783) |

## What reviewers say

### こいぶみ｜手紙と交換日記のカップルアプリ

[App page](https://appshunter.io/ios/app/id6760828199)

**In-app purchases:** none


### Coteka

[App page](https://appshunter.io/ios/app/coteka-split-and-settle-up/id6789443952)

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

**In-app purchases:** none


## Frequently asked questions

### Is こいぶみ｜手紙と交換日記のカップルアプリ free?

こいぶみ｜手紙と交換日記のカップルアプリ is free to download, with no in-app purchases.

### Is Coteka free?

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

### Do こいぶみ｜手紙と交換日記のカップルアプリ or Coteka have ads?

Coteka shows ads; こいぶみ｜手紙と交換日記のカップルアプリ does not.

### Which is updated more often, こいぶみ｜手紙と交換日記のカップルアプリ or Coteka?

こいぶみ｜手紙と交換日記のカップルアプリ ships an update every 4 days, and Coteka every 3 weeks. Most recently, こいぶみ｜手紙と交換日記のカップルアプリ was updated on October 28, 2026 and Coteka on October 28, 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.*