# Jackson Heart Study vs AlertU

The clearest difference is update cadence: AlertU at every 3 weeks against Jackson Heart Study's every 11 months. Jackson Heart Study's advantage is iOS requirement (12.1 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Jackson Heart Study ships an update every 11 months, AlertU every 3 weeks. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Jackson Heart Study | AlertU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Size | 29 MB | 174 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of Mississippi Medical Center](https://appshunter.io/developer/940152854) | [Merago Inc](https://appshunter.io/developer/1649305095) |

## What reviewers say

### Jackson Heart Study

[App page](https://appshunter.io/ios/app/jackson-heart-study/id1539841039)

**Features:** macOS Compatibility

**In-app purchases:** none


### AlertU

[App page](https://appshunter.io/ios/app/alertu/id6502567177)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Jackson Heart Study free?

Jackson Heart Study is free to download, with no in-app purchases.

### Is AlertU free?

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

### Do Jackson Heart Study or AlertU have ads?

Neither Jackson Heart Study nor AlertU shows ads.

### Which is updated more often, Jackson Heart Study or AlertU?

Jackson Heart Study ships an update every 11 months, and AlertU every 3 weeks. Most recently, Jackson Heart Study was updated on October 17, 2026 and AlertU on October 5, 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.*