# Faeth Digital Health vs FLEX Study App

The clearest difference is update cadence: Faeth Digital Health at every 3 weeks against FLEX Study App's every 5 months. 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.

Faeth Digital Health ships an update every 3 weeks, FLEX Study App every 5 months. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Faeth Digital Health | FLEX Study App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/faeth-digital-health/id1589487031/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 41 MB | 149 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Faeth Therapeutics, Inc.](https://appshunter.io/developer/1578695287) | [Hello Thread](https://appshunter.io/developer/996237890) |

## What reviewers say

### Faeth Digital Health

[App page](https://appshunter.io/ios/app/faeth-digital-health/id1589487031)

This app provides study participants with access to the Faeth clinic experience. It features a new deep-linking system for a smoother user journey when opening links within the application.

**Highlights:** Access clinic experience, Deep-linking system, Study participant resources, Information on cancer metabolism

**Features:** macOS Compatibility

**In-app purchases:** none


### FLEX Study App

[App page](https://appshunter.io/ios/app/flex-study-app/id1627659963)

**In-app purchases:** none


## Frequently asked questions

### Is Faeth Digital Health free?

Faeth Digital Health is free to download, with no in-app purchases.

### Is FLEX Study App free?

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

### Do Faeth Digital Health or FLEX Study App have ads?

Neither Faeth Digital Health nor FLEX Study App shows ads.

### Which is updated more often, Faeth Digital Health or FLEX Study App?

Faeth Digital Health ships an update every 3 weeks, and FLEX Study App every 5 months. Most recently, Faeth Digital Health was updated on October 4, 2026 and FLEX Study App on October 17, 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.*