# ProMetronome+ vs Stemify AI

The clearest difference is update cadence: Stemify AI at every 5 days against ProMetronome+'s every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ProMetronome+ ships an update every 2 weeks, Stemify AI every 5 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ProMetronome+ | Stemify AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 11 MB | 294 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) | [ilke alpay](https://appshunter.io/developer/1835247390) |

## What reviewers say

### ProMetronome+

[App page](https://appshunter.io/ios/app/prometronome-plus/id6760995740)

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

**In-app purchases:** none


### Stemify AI

[App page](https://appshunter.io/ios/app/stemify-ai-vocal-remover/id6818793478)

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

**In-app purchases:** none


## Frequently asked questions

### Is ProMetronome+ free?

ProMetronome+ is free to download, with no in-app purchases.

### Is Stemify AI free?

Stemify AI is free to download, with no in-app purchases.

### Do ProMetronome+ or Stemify AI have ads?

Both ProMetronome+ and Stemify AI show ads.

### Which is updated more often, ProMetronome+ or Stemify AI?

ProMetronome+ ships an update every 2 weeks, and Stemify AI every 5 days. Most recently, ProMetronome+ was updated on November 11, 2026 and Stemify AI on October 31, 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.*