# SweatStacks vs GEMS Study

The clearest difference is update cadence: SweatStacks at every 10 days against GEMS Study's every 2 months. 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.

SweatStacks ships an update every 10 days, GEMS Study every 2 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SweatStacks | GEMS Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Size | 740 MB | 152 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Oftring Ventures, LLC](https://appshunter.io/developer/1590945542) | [Kaiser Permanente](https://appshunter.io/developer/446423714) |

## What reviewers say

### SweatStacks

[App page](https://appshunter.io/ios/app/sweatstacks/id6458591124)

**Features:** macOS Compatibility

**In-app purchases:** none


### GEMS Study

[App page](https://appshunter.io/ios/app/gems-study/id6746661401)

**In-app purchases:** none


## Frequently asked questions

### Is SweatStacks free?

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

### Is GEMS Study free?

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

### Do SweatStacks or GEMS Study have ads?

Neither SweatStacks nor GEMS Study shows ads.

### Which is updated more often, SweatStacks or GEMS Study?

SweatStacks ships an update every 10 days, and GEMS Study every 2 months. Most recently, SweatStacks was updated on September 15, 2026 and GEMS Study on September 24, 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.*