# Pro Osteo vs Earz

The clearest difference is update cadence: Earz at every 3 weeks against Pro Osteo's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pro Osteo ships an update every 7 months, Earz every 3 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pro Osteo | Earz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/earz/id979496033/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 66 MB | 6 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Panta Rhei Opleidingen B.V.](https://appshunter.io/developer/1484811979) | [Ger Wolthuis](https://appshunter.io/developer/979496032) |

## What reviewers say

### Pro Osteo

[App page](https://appshunter.io/ios/app/pro-osteo/id950070129)

**Features:** Vision Pro support

**In-app purchases:** none


### Earz

[App page](https://appshunter.io/ios/app/earz/id979496033)

This app offers comprehensive music lessons for all skill levels, covering note reading, music theory, and ear training for various musical elements. It's designed for both individual learners and educators, with customizable content for students.

**Highlights:** Note reading instruction, Music theory lessons, Ear training for chords, harmony, scales, and intervals, Instrument and style recognition, Rhythm and time signature practice, Customizable content for educators

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

**In-app purchases:** none


## Frequently asked questions

### Is Pro Osteo free?

Pro Osteo is free to download, with no in-app purchases.

### Is Earz free?

Earz is free to download, with no in-app purchases.

### Do Pro Osteo or Earz have ads?

Neither Pro Osteo nor Earz shows ads.

### Which is updated more often, Pro Osteo or Earz?

Pro Osteo ships an update every 7 months, and Earz every 3 weeks. Most recently, Pro Osteo was updated on October 3, 2026 and Earz on October 10, 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.*