# 無限回廊 vs Kusari

The clearest difference is device support: Kusari at 2 against 無限回廊's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. 無限回廊 sells 1 one-off in-app purchase and Kusari sells 1 in-app purchase, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 無限回廊 | Kusari |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 208 MB | 123 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | — | **iPhone, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [LIANG WU](https://appshunter.io/developer/1875643238) | [RYUTA ABE](https://appshunter.io/developer/1895880547) |

## What reviewers say

### 無限回廊

[App page](https://appshunter.io/ios/app/infinite-corridor/id6758903564)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無限回廊：プロ版（全機能解放） | $4.99 | one-time |


### Kusari

[App page](https://appshunter.io/ios/app/kusari/id6764690812)

This app uses behavioral economics to build a daily English learning habit. It employs a commitment device where users risk losing money if they miss their daily tasks, encouraging consistent practice through financial stakes rather than willpower. Daily activities include reading, shadowing, and AI conversation, taking 15-20 minutes.

**Highlights:** Commitment device with financial stakes, Daily reading, shadowing, and AI conversation, 15-20 minute daily tasks, Behavioral economics principles applied, Dynamic skill level adjustment (CEFR A1-C2), Tiered pricing based on daily achievement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kusari Monthly | $29.99 | per month |


## Frequently asked questions

### Is 無限回廊 free?

無限回廊 is free to download, with in-app purchases available.

### Is Kusari free?

Kusari is free to download, with in-app purchases available.

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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.*