# OtoTheory vs Collabro Studio

The clearest difference is iOS requirement: Collabro Studio at 15.0 against OtoTheory's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OtoTheory sells 2 in-app purchases, starting at $4.99 per month and Collabro Studio sells 7 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

OtoTheory ships an update every 2 days, Collabro Studio daily. The most recent releases landed on October 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | OtoTheory | Collabro Studio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Freemium | — |
| Size | 58 MB | 24 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NORITO HARADA](https://appshunter.io/developer/1851826664) | [Larry Chapman](https://appshunter.io/developer/6781446821) |

## What reviewers say

### OtoTheory

[App page](https://appshunter.io/ios/app/ototheory-chord-progression/id6755084287)

Create music theory-correct chord progressions intuitively, even without prior knowledge. Features AI song analysis, real-time editing with backing tracks, and MIDI export for digital audio workstations.

**Highlights:** AI Chord Import, Chord Progression Builder, 15 Groove Patterns, 50 Presets, OtoTheory AI Suggestions, MIDI Export, Fretboard & Keyboard Views

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OtoTheory | $4.99 | per month |
| OtoTheory Pro (Annual) | $49.99 | per year |


### Collabro Studio

[App page](https://appshunter.io/ios/app/collabro-studio/id6782520358)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Indie | $8.99 | per month |
| Pro | $19.99 | per month |
| Studio | $29.99 | per month |
| Indie (Yearly) | $90.00 | per year |
| Pro (Yearly) | $169.99 | per year |
| Studio (Yearly) | $300.00 | per year |
| Founders' Lifetime | $299.00 | one-time |


## Frequently asked questions

### Is OtoTheory free?

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

### Is Collabro Studio free?

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

### Do OtoTheory or Collabro Studio have ads?

Neither OtoTheory nor Collabro Studio shows ads.

### Which is updated more often, OtoTheory or Collabro Studio?

OtoTheory ships an update every 2 days, and Collabro Studio daily. Most recently, OtoTheory was updated on October 25, 2026 and Collabro Studio on October 1, 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.*