# AMS First Aid Study vs St. John (HK)

The clearest difference is ads: St. John (HK) at none against AMS First Aid Study's shown. AMS First Aid Study's advantage is update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

AMS First Aid Study ships an update every 3 weeks, St. John (HK) every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | AMS First Aid Study | St. John (HK) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 19 MB | 25 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Wong Ki Chun](https://appshunter.io/developer/1520856630) | [stjohn](https://appshunter.io/developer/1590880373) |

## What reviewers say

### AMS First Aid Study

[App page](https://appshunter.io/ios/app/ams-first-aid-study/id1520856628)

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

**In-app purchases:** none


### St. John (HK)

[App page](https://appshunter.io/ios/app/st-john-hk/id1608760571)

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

**In-app purchases:** none


## Frequently asked questions

### Is AMS First Aid Study free?

AMS First Aid Study is free to download, with no in-app purchases.

### Is St. John (HK) free?

St. John (HK) is free to download, with no in-app purchases.

### Do AMS First Aid Study or St. John (HK) have ads?

AMS First Aid Study shows ads; St. John (HK) does not.

### Which is updated more often, AMS First Aid Study or St. John (HK)?

AMS First Aid Study ships an update every 3 weeks, and St. John (HK) every 3 months. Most recently, AMS First Aid Study was updated on November 3, 2026 and St. John (HK) on November 3, 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.*