# polymachine vs Piano Keyboard Pro

The clearest difference is iOS requirement: polymachine at 15.0 against Piano Keyboard Pro's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. polymachine sells 2 one-off in-app purchases and Piano Keyboard Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | polymachine | Piano Keyboard Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (13 ratings)](https://appshunter.io/ios/app/polymachine/id6761276852/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Paid | — |
| Size | 106 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Gao](https://appshunter.io/developer/384844113) | [CloudEx Inc.](https://appshunter.io/developer/1684103591) |

## What reviewers say

### polymachine

[App page](https://appshunter.io/ios/app/polymachine/id6761276852)

This app offers a unique approach to music creation by combining geometric principles with modular synthesis. Explore generative algorithmic drums, oscillators, and harmonies, with specialized tools for 808s and kick drum integration.

**Highlights:** Geometric music theory integration, Modular synthesis engine, Generative algorithmic drums, Oscillators and harmonies, 808 and kick drum linking, Log drum pattern generator

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sound Expansion | $1.99 | one-time |
| Pro Features | $34.99 | one-time |


### Piano Keyboard Pro

[App page](https://appshunter.io/ios/app/piano-keyboard-pro-practice/id6818850223)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is polymachine free?

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

### Is Piano Keyboard Pro free?

Piano Keyboard Pro is free to download, with in-app purchases available.

### Do polymachine or Piano Keyboard Pro have ads?

Neither polymachine nor Piano Keyboard Pro 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.*