# Extra Hands CPR Assistant vs ChartKey

The clearest difference is iOS requirement: Extra Hands CPR Assistant at 13.0 against ChartKey's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Extra Hands CPR Assistant sells 3 one-off in-app purchases and ChartKey sells 4 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Extra Hands CPR Assistant | ChartKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 152 MB | 24 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Nathan Harig](https://appshunter.io/developer/1031755527) | [Kamal Nasir](https://appshunter.io/developer/1111945949) |

## 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 |


### ChartKey

[App page](https://appshunter.io/ios/app/chartkey-medical-keyboard/id6798726638)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChartKey Pro Weekly | $2.99 | per 7 days |
| ChartKey Pro Monthly | $4.99 | per month |
| ChartKey Pro Yearly | $24.99 | per year |
| ChartKey Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Extra Hands CPR Assistant free?

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

### Is ChartKey free?

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

### Do Extra Hands CPR Assistant or ChartKey have ads?

Neither Extra Hands CPR Assistant nor ChartKey shows ads.

### Which is updated more often, Extra Hands CPR Assistant or ChartKey?

Extra Hands CPR Assistant ships an update every 2 months, and ChartKey every 2 months. Most recently, Extra Hands CPR Assistant was updated on October 24, 2026 and ChartKey on October 25, 2026.

---

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