# REACT Study vs AlertFriends App

The clearest difference is in-app purchases: REACT Study at none against AlertFriends App's 1. REACT Study also leads on device support (3 vs 1) and iOS requirement (15.6 vs 26.0). On price and ads there is nothing between them.

Both are free to download. AlertFriends App sells 1 in-app purchase, starting at $5.59 per month. REACT Study asks for nothing beyond the download.

## The numbers

| Metric | REACT Study | AlertFriends App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/react-study/id6738690719/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 34 MB | 83 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Centro Nacional de Investigaciones Cardiovasculares Carlos III (F.S.P.)](https://appshunter.io/developer/1463033570) | [AlertFriends](https://appshunter.io/developer/1896431883) |

## What reviewers say

### REACT Study

[App page](https://appshunter.io/ios/app/react-study/id6738690719)

This app supports an international research initiative focused on preventing cardiovascular diseases by detecting atherosclerosis early. Contribute to personalized detection and treatment strategies to improve global health outcomes.

**Highlights:** Supports international research initiative, Focuses on early atherosclerosis detection, Contributes to personalized treatment strategies, Aims to prevent cardiovascular diseases, Facilitates global health improvement

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

**In-app purchases:** none


### AlertFriends App

[App page](https://appshunter.io/ios/app/alertfriends-app/id6767226079)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alert Friends | $5.59 | per month |


## Frequently asked questions

### Is REACT Study free?

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

### Is AlertFriends App free?

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

### Do REACT Study or AlertFriends App have ads?

Neither REACT Study nor AlertFriends App shows ads.

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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.*