# Extra Hands CPR Assistant vs Understanding Rett Syndrome

The clearest difference is in-app purchases: Understanding Rett Syndrome at none against Extra Hands CPR Assistant's 3. Extra Hands CPR Assistant's advantage is update cadence (every 2 months vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Extra Hands CPR Assistant sells 3 one-off in-app purchases. Understanding Rett Syndrome asks for nothing beyond the download.

Extra Hands CPR Assistant ships an update every 2 months, Understanding Rett Syndrome every 8 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Extra Hands CPR Assistant | Understanding Rett Syndrome |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 152 MB | 255 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Nathan Harig](https://appshunter.io/developer/1031755527) | [Med Learning Group](https://appshunter.io/developer/1268829636) |

## What reviewers say

### Extra Hands CPR Assistant

[App page](https://appshunter.io/ios/app/extra-hands-cpr-assistant/id1559975452)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


### Understanding Rett Syndrome

[App page](https://appshunter.io/ios/app/understanding-rett-syndrome/id6459194427)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Extra Hands CPR Assistant free?

Extra Hands CPR Assistant is free to download, with in-app purchases available.

### Is Understanding Rett Syndrome free?

Understanding Rett Syndrome is free to download, with no in-app purchases.

### Do Extra Hands CPR Assistant or Understanding Rett Syndrome have ads?

Neither Extra Hands CPR Assistant nor Understanding Rett Syndrome shows ads.

### Which is updated more often, Extra Hands CPR Assistant or Understanding Rett Syndrome?

Extra Hands CPR Assistant ships an update every 2 months, and Understanding Rett Syndrome every 8 months. Most recently, Extra Hands CPR Assistant was updated on October 24, 2026 and Understanding Rett Syndrome on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*