# Metronome BPM vs ZZZ Polyrhythm

The clearest difference is device support: ZZZ Polyrhythm at 2 against Metronome BPM's —. Metronome BPM's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Metronome BPM sells 3 in-app purchases, starting at $1.99 per month and ZZZ Polyrhythm sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Metronome BPM ships an update every 5 weeks, ZZZ Polyrhythm every 6 weeks. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Metronome BPM | ZZZ Polyrhythm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | Yes |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Size | 55 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [炤翊 吴](https://appshunter.io/developer/1865185609) | [SMOLT STAGE, K.K.](https://appshunter.io/developer/1708601451) |

## What reviewers say

### Metronome BPM

[App page](https://appshunter.io/ios/app/metronome-bpm-tickstudio/id6757201849)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TickStudio Pro | $1.99 | per month |
| TickStudio Pro Quarterly | $4.99 | per 3 months |
| TickStudio Pro Yearly | $14.99 | per year |


### ZZZ Polyrhythm

[App page](https://appshunter.io/ios/app/zzz-polyrhythm/id6773375285)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZZZ Polyrhythm Premium | $0.99 | per month |


## Frequently asked questions

### Is Metronome BPM free?

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

### Is ZZZ Polyrhythm free?

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

### Which is updated more often, Metronome BPM or ZZZ Polyrhythm?

Metronome BPM ships an update every 5 weeks, and ZZZ Polyrhythm every 6 weeks. Most recently, Metronome BPM was updated on October 11, 2026 and ZZZ Polyrhythm on October 20, 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.*