# うたキー | カラオケで自分のキーがすぐわかる vs Harmony Chack

The clearest difference is iOS requirement: Harmony Chack at 16.0 against うたキー | カラオケで自分のキーがすぐわかる's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. うたキー | カラオケで自分のキーがすぐわかる sells 2 in-app purchases, starting at $3.99 per month and Harmony Chack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | うたキー | カラオケで自分のキーがすぐわかる | Harmony Chack |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 34 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [deruku](https://appshunter.io/developer/6773620366) | [Hironori Karube](https://appshunter.io/developer/1880243912) |

## What reviewers say

### うたキー | カラオケで自分のキーがすぐわかる

[App page](https://appshunter.io/ios/app/id6790232910)

Find your perfect singing key for any song. This app analyzes your voice to suggest optimal key adjustments for karaoke, making songs easier and more enjoyable to sing. Manage your favorite songs and track your vocal progress.

**Highlights:** Suggests optimal song keys based on voice profile, Indicates vocal effort for each key, Recommends songs based on your vocal range, Search songs by highest note, theme, or key adjustment, Records sung songs and used keys, Manages favorite songs and playlists

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UtaKey PRO (Monthly) | $3.99 | per month |
| うたきー PRO（年額） | $24.99 | per year |


### Harmony Chack

[App page](https://appshunter.io/ios/app/harmony-chack/id6803001408)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $0.99 | one-time |


## Frequently asked questions

### Is うたキー | カラオケで自分のキーがすぐわかる free?

うたキー | カラオケで自分のキーがすぐわかる is free to download, with in-app purchases available.

### Is Harmony Chack free?

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

### Do うたキー | カラオケで自分のキーがすぐわかる or Harmony Chack have ads?

Neither うたキー | カラオケで自分のキーがすぐわかる nor Harmony Chack 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.*