# Earback vs オトピア｜ボイトレとピアノコード練習

Earback and オトピア｜ボイトレとピアノコード練習 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Earback sells 1 one-off in-app purchase and オトピア｜ボイトレとピアノコード練習 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Earback | オトピア｜ボイトレとピアノコード練習 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Size | 9 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SHOTARO TAKAHASHI](https://appshunter.io/developer/6777748605) | [Yamamoto Chihiro](https://appshunter.io/developer/6784491911) |

## What reviewers say

### Earback

[App page](https://appshunter.io/ios/app/earback-practice-and-compare/id6777748603)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $3.99 | one-time |


### オトピア｜ボイトレとピアノコード練習

[App page](https://appshunter.io/ios/app/id6788701092)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $24.99 | per year |
| Premium LIfetime | $39.99 | one-time |


## Frequently asked questions

### Is Earback free?

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

### Is オトピア｜ボイトレとピアノコード練習 free?

オトピア｜ボイトレとピアノコード練習 is free to download, with in-app purchases available.

### Do Earback or オトピア｜ボイトレとピアノコード練習 have ads?

Both Earback and オトピア｜ボイトレとピアノコード練習 show 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.*