# ThunderGym vs OneAura

The clearest difference is in-app purchases: ThunderGym at none against OneAura's 1. ThunderGym also leads on iOS requirement (12.0.0 vs 15.0). OneAura's advantage is update cadence (every 2 days vs every 14 months). On price, ads and device support there is nothing between them.

Both are free to download. OneAura sells 1 in-app purchase, starting at $3.99 per month. ThunderGym asks for nothing beyond the download.

ThunderGym ships an update every 14 months, OneAura every 2 days. The most recent releases landed on October 27, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ThunderGym | OneAura |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 days** |
| Size | 42 MB | 36 MB |
| Requires iOS | **12.0.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ThunderGym](https://appshunter.io/developer/1643657861) | [Rocktaps LTD](https://appshunter.io/developer/1896488586) |

## What reviewers say

### ThunderGym

[App page](https://appshunter.io/ios/app/thundergym/id1643657859)

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

**In-app purchases:** none


### OneAura

[App page](https://appshunter.io/ios/app/oneaura/id6767570309)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Miembro OneAura | $3.99 | per month |


## Frequently asked questions

### Is ThunderGym free?

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

### Is OneAura free?

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

### Do ThunderGym or OneAura have ads?

Neither ThunderGym nor OneAura shows ads.

### Which is updated more often, ThunderGym or OneAura?

ThunderGym ships an update every 14 months, and OneAura every 2 days. Most recently, ThunderGym was updated on October 27, 2026 and OneAura on October 18, 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.*