# 英語学習 vs KULMS+ Mobile

The clearest difference is in-app purchases: KULMS+ Mobile at none against 英語学習's 3. 英語学習's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 英語学習 sells 3 in-app purchases, starting at $5.99 per month. KULMS+ Mobile asks for nothing beyond the download.

英語学習 ships an update every 4 days, KULMS+ Mobile every 5 days. The most recent releases landed on September 28, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 英語学習 | KULMS+ Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Freemium | — |
| Size | 145 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ATSUSHI KIMURA](https://appshunter.io/developer/1829870349) | [Oonishi Daichi](https://appshunter.io/developer/1893206903) |

## What reviewers say

### 英語学習

[App page](https://appshunter.io/ios/app/boostai/id6749287559)

This AI-powered app offers instant English writing feedback, detailed explanations, and AI chat for deeper understanding. It supports various writing styles and learning goals, helping users improve their English proficiency anytime, anywhere.

**Highlights:** Instant AI essay correction, Detailed explanations for errors, Handwriting recognition for essays, AI chat for clarification, Learning history management, Diverse question formats, Flashcards and English news

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Boost Pro 月額プラン | $5.99 | per month |
| 3ヶ月 | $11.99 | per 3 months |
| Boost Pro 年額プラン | $39.99 | per year |


### KULMS+ Mobile

[App page](https://appshunter.io/ios/app/kulms-plus-mobile/id6762236865)

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

**In-app purchases:** none


## Frequently asked questions

### Is 英語学習 free?

英語学習 is free to download, with in-app purchases available.

### Is KULMS+ Mobile free?

KULMS+ Mobile is free to download, with no in-app purchases.

### Do 英語学習 or KULMS+ Mobile have ads?

Neither 英語学習 nor KULMS+ Mobile shows ads.

### Which is updated more often, 英語学習 or KULMS+ Mobile?

英語学習 ships an update every 4 days, and KULMS+ Mobile every 5 days. Most recently, 英語学習 was updated on September 28, 2026 and KULMS+ Mobile on September 24, 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.*