# GEMS Study vs HTX Swims

The clearest difference is device support: HTX Swims at 3 against GEMS Study's 1. HTX Swims also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GEMS Study | HTX Swims |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 152 MB | 64 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kaiser Permanente](https://appshunter.io/developer/446423714) | [iClassPro Inc](https://appshunter.io/developer/1194756576) |

## What reviewers say

### GEMS Study

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

**In-app purchases:** none


### HTX Swims

[App page](https://appshunter.io/ios/app/htx-swims/id6761866990)

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

**In-app purchases:** none


## Frequently asked questions

### Is GEMS Study free?

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

### Is HTX Swims free?

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

### Do GEMS Study or HTX Swims have ads?

Neither GEMS Study nor HTX Swims shows ads.

### Which is updated more often, GEMS Study or HTX Swims?

GEMS Study ships an update every 2 months, and HTX Swims every 2 months. Most recently, GEMS Study was updated on October 27, 2026 and HTX Swims on October 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.*