# 作家のためのアイデア創造アプリ！ライトレ vs コトアム

The clearest difference is review sentiment: コトアム at 67% against 作家のためのアイデア創造アプリ！ライトレ's 10%. 作家のためのアイデア創造アプリ！ライトレ's advantage is iOS requirement (7.0 vs 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | 作家のためのアイデア創造アプリ！ライトレ | コトアム |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 4 MB | 78 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Unframe, Inc.](https://appshunter.io/developer/686047949) | [TOKYO DOME CORPORATION](https://appshunter.io/developer/1121904377) |

## What reviewers say

### 作家のためのアイデア創造アプリ！ライトレ

[App page](https://appshunter.io/ios/app/id726118318)

This app helps aspiring writers and creatives improve their storytelling and logical thinking skills through a fun, game-like exercise. It provides prompts and challenges to foster imagination and composition abilities, with options for timed sessions and collaborative storytelling.

**Highlights:** Random three-word prompts, Character limits (100 characters or unlimited), Timed writing sessions, Collaborative relay mode, Custom prompt creation, Save and favorite stories, Social media integration

**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 作家のためのアイデア創造アプリ！ライトレ free?

作家のためのアイデア創造アプリ！ライトレ 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 作家のためのアイデア創造アプリ！ライトレ or コトアム have ads?

Neither 作家のためのアイデア創造アプリ！ライトレ nor コトアム shows ads.

### Which is updated more often, 作家のためのアイデア創造アプリ！ライトレ or コトアム?

作家のためのアイデア創造アプリ！ライトレ ships an update every 3 weeks, and コトアム every 3 weeks. Most recently, 作家のためのアイデア創造アプリ！ライトレ was updated on November 6, 2026 and コトアム on November 12, 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.*