# OnStem vs Stemzel

The clearest difference is ads: Stemzel at none against OnStem's shown. OnStem's advantage is iOS requirement (18.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OnStem sells 4 in-app purchases, starting at $0.99 per month and Stemzel sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | OnStem | Stemzel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/stemzel/id6789668513/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Free with in-app purchases |
| Size | 137 MB | 290 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [阳 刘](https://appshunter.io/developer/1616314142) | [Mahija Kottapalli](https://appshunter.io/developer/6789668515) |

## What reviewers say

### OnStem

[App page](https://appshunter.io/ios/app/onstem-local-music-split/id6756013787)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnStem Pro – Monthly | $0.99 | per month |
| OnStem Pro – Quarterly | $2.39 | per 3 months |
| OnStem Pro – Annual | $8.99 | per year |
| OnStem Pro – Lifetime | $9.99 | one-time |


### Stemzel

[App page](https://appshunter.io/ios/app/stemzel/id6789668513)

This app separates any song into vocals, drums, bass, and other instruments directly on your device. It offers on-device AI processing for privacy, with no cloud uploads or subscriptions required. Mix, mute, solo, and export individual stems or the full mix.

**Highlights:** On-device AI stem separation, Import audio from files or URL, Record and split audio instantly, Mute or solo individual stems, Built-in waveform scrubber, Export stems and full mix

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Stemzel Unlock | $7.99 | one-time |


## Frequently asked questions

### Is OnStem free?

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

### Is Stemzel free?

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

### Do OnStem or Stemzel have ads?

OnStem shows ads; Stemzel does not.

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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.*