# アメリカ英語フレーズ vs Keystrike

アメリカ英語フレーズ and Keystrike are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. アメリカ英語フレーズ sells 1 one-off in-app purchase and Keystrike sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

アメリカ英語フレーズ ships an update weekly, Keystrike every 5 days. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | アメリカ英語フレーズ | Keystrike |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 70 MB | 98 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Usalingual](https://appshunter.io/developer/1730696495) | [Blue Flame Games](https://appshunter.io/developer/523824138) |

## What reviewers say

### アメリカ英語フレーズ

[App page](https://appshunter.io/ios/app/id6479313403)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全機能の継続アクセス | $3.99 | one-time |


### Keystrike

[App page](https://appshunter.io/ios/app/keystrike-piano-sight-reading/id6763947075)

This app helps you build a consistent piano practice routine with graded lessons, sight-reading exercises, and real music. It offers personalized practice plans, tracks your progress, and supports various input methods including MIDI keyboards and on-screen pianos.

**Highlights:** Graded piano lessons, Sight-reading practice, Rhythm and ear training, Import MIDI files, On-screen and MIDI keyboard support, Practice recording and export

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keystrike Unlock | $14.99 | one-time |


## Frequently asked questions

### Is アメリカ英語フレーズ free?

アメリカ英語フレーズ is free to download, with in-app purchases available.

### Is Keystrike free?

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

### Do アメリカ英語フレーズ or Keystrike have ads?

Neither アメリカ英語フレーズ nor Keystrike shows ads.

### Which is updated more often, アメリカ英語フレーズ or Keystrike?

アメリカ英語フレーズ ships an update weekly, and Keystrike every 5 days. Most recently, アメリカ英語フレーズ was updated on October 2, 2026 and Keystrike on October 17, 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.*