# Chords Genius vs PNO Book

The clearest difference is in-app purchases: PNO Book at none against Chords Genius's 1. Chords Genius's advantage is iOS requirement (9.3 vs 14.0.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chords Genius sells 1 one-off in-app purchase. PNO Book asks for nothing beyond the download.

Chords Genius ships an update every 3 days, PNO Book weekly. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Chords Genius | PNO Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/chords-genius/id1134949317/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 58 MB |
| Requires iOS | **9.3** | 14.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Felix Mood](https://appshunter.io/developer/369370194) | [Reginald Watkins](https://appshunter.io/developer/1774881490) |

## What reviewers say

### Chords Genius

[App page](https://appshunter.io/ios/app/chords-genius/id1134949317)

Identify chords by entering their notes and discover close matches. This tool offers chord sequences, scales, and a calculator to find notes within a chord. Hear chords and scales, with VoiceOver support for accessibility.

**Highlights:** Chord identification by note entry, Close matching chord alternatives, Chord sequence suggestions, Chord calculator, Scale suggestions, Audio playback for chords and scales, VoiceOver support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $1.99 | one-time |


### PNO Book

[App page](https://appshunter.io/ios/app/pno-book/id6743553403)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chords Genius free?

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

### Is PNO Book free?

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

### Do Chords Genius or PNO Book have ads?

Neither Chords Genius nor PNO Book shows ads.

### Which is updated more often, Chords Genius or PNO Book?

Chords Genius ships an update every 3 days, and PNO Book weekly. Most recently, Chords Genius was updated on November 6, 2026 and PNO Book on October 30, 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.*