# KK音標で英語一発習得！ vs いつでも英語脳

The clearest difference is price: KK音標で英語一発習得！ at Free against いつでも英語脳's $2.99. KK音標で英語一発習得！ also leads on device support (3 vs 1) and iOS requirement (9.0 vs 18.0). いつでも英語脳's advantage is in-app purchases (none vs 1). On review sentiment and ads there is nothing between them.

KK音標で英語一発習得！ is free to download; いつでも英語脳 costs $2.99 up front. KK音標で英語一発習得！ sells 1 one-off in-app purchase. いつでも英語脳 asks for nothing beyond the download.

## The numbers

| Metric | KK音標で英語一発習得！ | いつでも英語脳 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Monetization | Free | — |
| Size | 209 MB | 8 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Otek International Inc.](https://appshunter.io/developer/318583126) | [Yodai Kadokawa](https://appshunter.io/developer/6798598113) |

## What reviewers say

### KK音標で英語一発習得！

[App page](https://appshunter.io/ios/app/kk/id1447361491)

This app teaches English pronunciation and spelling using the KK phonetic system and phonics. It breaks down pronunciation with visual aids and practical examples, helping learners improve both their speaking and vocabulary. Includes exercises to test listening and speaking skills.

**Highlights:** KK phonetic system and phonics learning, Visual aids for pronunciation techniques, Practical vocabulary with 700 words, Distinguishes similar sounds, Exercises for listening and speaking, Native English speaker audio

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 「KK音標で英語一発習得有料版にアップグレード」 | $2.99 | one-time |


### いつでも英語脳

[App page](https://appshunter.io/ios/app/id6798598111)

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

**In-app purchases:** none


## Frequently asked questions

### Is KK音標で英語一発習得！ free?

KK音標で英語一発習得！ is free to download, with in-app purchases available.

### Is いつでも英語脳 free?

いつでも英語脳 costs $2.99, with no in-app purchases.

### Do KK音標で英語一発習得！ or いつでも英語脳 have ads?

Neither KK音標で英語一発習得！ nor いつでも英語脳 shows ads.

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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.*