# KaraLog vs うたキー | カラオケで自分のキーがすぐわかる

The clearest difference is update cadence: うたキー | カラオケで自分のキーがすぐわかる at every 3 days against KaraLog's every 9 days. うたキー | カラオケで自分のキーがすぐわかる also leads on iOS requirement (18.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. KaraLog sells 1 one-off in-app purchase and 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. Whichever you choose, the download price is not the number that matters.

KaraLog ships an update every 9 days, うたキー | カラオケで自分のキーがすぐわかる every 3 days. The most recent releases landed on October 4, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | KaraLog | うたキー | カラオケで自分のキーがすぐわかる |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 26 MB |
| Requires iOS | 26.5 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Nishimatsu](https://appshunter.io/developer/1480004995) | [deruku](https://appshunter.io/developer/6773620366) |

## What reviewers say

### KaraLog

[App page](https://appshunter.io/ios/app/karalog/id6772887332)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KaraLog Pro | $2.99 | one-time |


### 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 |


## Frequently asked questions

### Is KaraLog free?

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

### 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.

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

Neither KaraLog nor うたキー | カラオケで自分のキーがすぐわかる shows ads.

### Which is updated more often, KaraLog or うたキー | カラオケで自分のキーがすぐわかる?

KaraLog ships an update every 9 days, and うたキー | カラオケで自分のキーがすぐわかる every 3 days. Most recently, KaraLog was updated on October 4, 2026 and うたキー | カラオケで自分のキーがすぐわかる on October 20, 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.*