# Boom Lab vs Stemzel

The clearest difference is in-app purchases: Boom Lab at none against Stemzel's 4. Boom Lab also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Stemzel sells 4 one-off in-app purchases. Boom Lab asks for nothing beyond the download.

## The numbers

| Metric | Boom Lab | Stemzel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 31 MB | 290 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Wright](https://appshunter.io/developer/1853148024) | [Mahija Kottapalli](https://appshunter.io/developer/6789668515) |

## What reviewers say

### Boom Lab

[App page](https://appshunter.io/ios/app/boom-lab/id6783103327)

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

**In-app purchases:** none


### Stemzel

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

**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 Boom Lab free?

Boom Lab is free to download, with no in-app purchases.

### Is Stemzel free?

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

### Do Boom Lab or Stemzel have ads?

Neither Boom Lab nor Stemzel 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.*