# Otonic vs Changes

The clearest difference is update cadence: Otonic at every 5 days against Changes's every 3 weeks. Otonic also leads on iOS requirement (12.0 vs 27.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Otonic sells 3 one-off in-app purchases and Changes sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Otonic ships an update every 5 days, Changes every 3 weeks. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Otonic | Changes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/otonic/id6740495154/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 9 MB |
| Requires iOS | **12.0** | 27.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Blackwell](https://appshunter.io/developer/1790247519) | [Warren Labs](https://appshunter.io/developer/6792763836) |

## What reviewers say

### Otonic

[App page](https://appshunter.io/ios/app/otonic/id6740495154)

Enhance your musical abilities with a comprehensive ear training application. Features a level editor for personalized learning experiences and progression tracking.

**Highlights:** Fully featured ear training, Level editor, Progression editor, Personalized learning, Music skill enhancement

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Otonic Pro | $6.99 | one-time |
| Otonic Essential | $19.99 | one-time |
| Otonic Pro | $39.99 | one-time |


### Changes

[App page](https://appshunter.io/ios/app/changes-nashville-numbers/id6792763834)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Changes Pro | $14.99 | one-time |


## Frequently asked questions

### Is Otonic free?

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

### Is Changes free?

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

### Do Otonic or Changes have ads?

Neither Otonic nor Changes shows ads.

### Which is updated more often, Otonic or Changes?

Otonic ships an update every 5 days, and Changes every 3 weeks. Most recently, Otonic was updated on October 30, 2026 and Changes on November 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.*