# ZZZ Polyrhythm vs Dorebit

The clearest difference is update cadence: Dorebit at weekly against ZZZ Polyrhythm's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

ZZZ Polyrhythm ships an update every 6 weeks, Dorebit weekly. Both last shipped on November 13, 2026.

## The numbers

| Metric | ZZZ Polyrhythm | Dorebit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 6 MB | 442 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SMOLT STAGE, K.K.](https://appshunter.io/developer/1708601451) | [Tomoki Terasaki](https://appshunter.io/developer/6821790491) |

## What reviewers say

### 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 |


### Dorebit

[App page](https://appshunter.io/ios/app/dorebit/id6821790489)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock All | $2.99 | one-time |


## Frequently asked questions

### Is ZZZ Polyrhythm free?

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

### Is Dorebit free?

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

### Do ZZZ Polyrhythm or Dorebit have ads?

Both ZZZ Polyrhythm and Dorebit show ads.

### Which is updated more often, ZZZ Polyrhythm or Dorebit?

ZZZ Polyrhythm ships an update every 6 weeks, and Dorebit weekly. Most recently, ZZZ Polyrhythm was updated on November 13, 2026 and Dorebit on November 13, 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.*