# Chords Genius vs 421Grid

The clearest difference is price: Chords Genius at Free against 421Grid's $1.99. Chords Genius also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (9.3 vs 18.0). 421Grid's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Chords Genius is free to download; 421Grid costs $1.99 up front. Chords Genius sells 1 one-off in-app purchase. 421Grid asks for nothing beyond the download.

Chords Genius ships an update every 3 days, 421Grid every 3 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Chords Genius | 421Grid |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| 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** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 4 MB |
| Requires iOS | **9.3** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Felix Mood](https://appshunter.io/developer/369370194) | [N. Wheeler](https://appshunter.io/developer/312350021) |

## 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 |


### 421Grid

[App page](https://appshunter.io/ios/app/421grid/id1598461370)

**Features:** macOS Compatibility, 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 421Grid free?

421Grid costs $1.99, with no in-app purchases.

### Do Chords Genius or 421Grid have ads?

Neither Chords Genius nor 421Grid shows ads.

### Which is updated more often, Chords Genius or 421Grid?

Chords Genius ships an update every 3 days, and 421Grid every 3 months. Most recently, Chords Genius was updated on November 6, 2026 and 421Grid 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.*