# OtoTheory vs Hook Player

The clearest difference is in-app purchases: Hook Player at none against OtoTheory's 2. Hook Player also leads on review sentiment (100% vs 91%). OtoTheory's advantage is iOS requirement (17.0 vs 27.0). On price, ads and device support there is nothing between them.

Both are free to download. OtoTheory sells 2 in-app purchases, starting at $4.99 per month. Hook Player asks for nothing beyond the download.

## The numbers

| Metric | OtoTheory | Hook Player |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hook-player/id6813447712/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 90.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | **Freemium** | Paid |
| Size | 58 MB | 1 MB |
| Requires iOS | **17.0** | 27.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NORITO HARADA](https://appshunter.io/developer/1851826664) | [TAKASHI NOSE](https://appshunter.io/developer/1869272305) |

## 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 |


### Hook Player

[App page](https://appshunter.io/ios/app/hook-player/id6813447712)

This music player allows you to quickly preview songs from your Apple Music library by focusing on their most engaging parts. Easily swipe through tracks to find new music or full songs to enjoy.

**Highlights:** Preview songs by highlights, Swipe to skip or go back, Full song playback, Search Apple Music, Discover new music, Manage playback queue, View artist pages

**In-app purchases:** none


## Frequently asked questions

### Is OtoTheory free?

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

### Is Hook Player free?

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

### Do OtoTheory or Hook Player have ads?

Neither OtoTheory nor Hook Player shows 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.*