# UNDAC vs US First Aid CPR Test

The clearest difference is in-app purchases: UNDAC at none against US First Aid CPR Test's 4. UNDAC also leads on iOS requirement (9.0 vs 13.0). US First Aid CPR Test's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. US First Aid CPR Test sells 4 in-app purchases, starting at $6.99 per 7 days. UNDAC asks for nothing beyond the download.

UNDAC ships an update every 3 weeks, US First Aid CPR Test every 4 days. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UNDAC | US First Aid CPR Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 9 MB | 25 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Nations](https://appshunter.io/developer/439971125) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### UNDAC

[App page](https://appshunter.io/ios/app/undac/id930915318)

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

**In-app purchases:** none


### US First Aid CPR Test

[App page](https://appshunter.io/ios/app/us-first-aid-cpr-test/id6774034793)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| US First Aid Full Access | $6.99 | per 7 days |
| US First Aid Full Access | $16.99 | per month |
| US First Aid Full Access | $39.99 | per 3 months |
| Unlock Full Access | $4.99 | one-time |


## Frequently asked questions

### Is UNDAC free?

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

### Is US First Aid CPR Test free?

US First Aid CPR Test is free to download, with in-app purchases available.

### Do UNDAC or US First Aid CPR Test have ads?

Neither UNDAC nor US First Aid CPR Test shows ads.

### Which is updated more often, UNDAC or US First Aid CPR Test?

UNDAC ships an update every 3 weeks, and US First Aid CPR Test every 4 days. Most recently, UNDAC was updated on October 20, 2026 and US First Aid CPR Test 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.*