# 英語準2級レベル対策ドリル vs Kusari

The clearest difference is in-app purchases: 英語準2級レベル対策ドリル at none against Kusari's 1. 英語準2級レベル対策ドリル also leads on update cadence (every 3 days vs every 10 days). Kusari's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Kusari sells 1 in-app purchase, starting at $29.99 per month. 英語準2級レベル対策ドリル asks for nothing beyond the download.

英語準2級レベル対策ドリル ships an update every 3 days, Kusari every 10 days. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 英語準2級レベル対策ドリル | Kusari |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 53 MB | 123 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AFTW LLC](https://appshunter.io/developer/1886356149) | [RYUTA ABE](https://appshunter.io/developer/1895880547) |

## What reviewers say

### 英語準2級レベル対策ドリル

[App page](https://appshunter.io/ios/app/2/id6761161021)

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

**In-app purchases:** none


### 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 英語準2級レベル対策ドリル free?

英語準2級レベル対策ドリル is free to download, with no in-app purchases.

### Is Kusari free?

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

### Do 英語準2級レベル対策ドリル or Kusari have ads?

英語準2級レベル対策ドリル shows ads; Kusari does not.

### Which is updated more often, 英語準2級レベル対策ドリル or Kusari?

英語準2級レベル対策ドリル ships an update every 3 days, and Kusari every 10 days. Most recently, 英語準2級レベル対策ドリル was updated on October 19, 2026 and Kusari on October 7, 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.*