# Pulse Rhythm vs Harmony Lab

The clearest difference is iOS requirement: Pulse Rhythm at 13.0 against Harmony Lab's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Pulse Rhythm sells 1 one-off in-app purchase and Harmony Lab sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Pulse Rhythm | Harmony Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 weeks |
| Size | 47 MB | 29 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [秋萍 明](https://appshunter.io/developer/1671497003) | [Sean Ray Dvir](https://appshunter.io/developer/1850830113) |

## What reviewers say

### Pulse Rhythm

[App page](https://appshunter.io/ios/app/pulse-rhythm/id6760534645)

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

**In-app purchases (1)**

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


### Harmony Lab

[App page](https://appshunter.io/ios/app/harmony-labchord-progressions/id6766231122)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $1.99 | per month |
| Full Access | $4.99 | per month |


## Frequently asked questions

### Is Pulse Rhythm free?

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

### Is Harmony Lab free?

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

### Do Pulse Rhythm or Harmony Lab have ads?

Neither Pulse Rhythm nor Harmony Lab 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.*