# SDGsアプリeito vs コトアム

The clearest difference is iOS requirement: SDGsアプリeito at 13.0 against コトアム's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

SDGsアプリeito ships an update monthly, コトアム every 3 weeks. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SDGsアプリeito | コトアム |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 86 MB | 78 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [UMEZAWA CO.,LTD.](https://appshunter.io/developer/1250892608) | [TOKYO DOME CORPORATION](https://appshunter.io/developer/1121904377) |

## What reviewers say

### SDGsアプリeito

[App page](https://appshunter.io/ios/app/sdgseito/id6451921579)

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

**In-app purchases:** none


### コトアム

[App page](https://appshunter.io/ios/app/id6526468549)

A quiet literary social network for crafting and reading short literary works like tanka, essays, and novels. Users can create personal "playlists" of favorite pieces, share their own creations, and discover new literary gems.

**Highlights:** Create and share short literary works, Curate personal "playlists" of favorite pieces, Discover popular and user-made playlists, Supports various genres including tanka, novels, and essays, Automatic vertical layout generation for writing, Share creations to X (formerly Twitter)

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

**In-app purchases:** none


## Frequently asked questions

### Is SDGsアプリeito free?

SDGsアプリeito is free to download, with no in-app purchases.

### Is コトアム free?

コトアム is free to download, with no in-app purchases.

### Do SDGsアプリeito or コトアム have ads?

Neither SDGsアプリeito nor コトアム shows ads.

### Which is updated more often, SDGsアプリeito or コトアム?

SDGsアプリeito ships an update monthly, and コトアム every 3 weeks. Most recently, SDGsアプリeito was updated on September 14, 2026 and コトアム on September 17, 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.*