# Zet vs GainMatrix

The clearest difference is in-app purchases: Zet at none against GainMatrix's 4. Zet also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. GainMatrix sells 4 in-app purchases, starting at $2.99 per month. Zet asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Zet | GainMatrix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 33 MB | 64 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Decentralized Science, Inc.](https://appshunter.io/developer/1824095954) | [Ulas Uzunyayla](https://appshunter.io/developer/1858691953) |

## What reviewers say

### Zet

[App page](https://appshunter.io/ios/app/zet/id6755644602)

**Features:** macOS Compatibility

**In-app purchases:** none


### GainMatrix

[App page](https://appshunter.io/ios/app/gainmatrix-ai-workout-tracker/id6756138508)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GainMatrix Pro | $2.99 | per month |
| GainMatrix Pro | $4.99 | per month |
| GainMatrix Pro | $17.99 | per year |
| GainMatrix Pro | $24.99 | per year |


## Frequently asked questions

### Is Zet free?

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

### Is GainMatrix free?

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

### Do Zet or GainMatrix have ads?

Neither Zet nor GainMatrix shows ads.

### Which is updated more often, Zet or GainMatrix?

Zet ships an update weekly, and GainMatrix weekly. Most recently, Zet was updated on October 8, 2026 and GainMatrix on October 4, 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.*