# Fusion ePRO vs Linus Tester

The clearest difference is iOS requirement: Fusion ePRO at 12.0 against Linus Tester's 15.6. On price, rating, ratings volume and update cadence there is nothing between them.

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

Linus Tester holds the better App Store score, 3.0 against 2.8. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Fusion ePRO | Linus Tester |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/fusion-epro/id1285191348/reviews) | **[3.0 (4 ratings)](https://appshunter.io/ios/app/linus-tester/id1523340677/reviews)** |
| Number of ratings | **6** | 4 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 41 MB | 202 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Schachter16680315703](https://appshunter.io/developer/1285191347) | [Linus Health, Inc.](https://appshunter.io/developer/1481489335) |

## What reviewers say

### Fusion ePRO

[App page](https://appshunter.io/ios/app/fusion-epro/id1285191348)

This app facilitates the real-time collection of patient data for clinical studies. It supports complex diary entries with smart checks and controlled time windows for accurate information gathering. Data syncs seamlessly into your overall clinical data management.

**Highlights:** Real-time patient data collection, Complex diary question capture, Smart checks for data accuracy, Controlled diary time windows, Easy synchronization of data

**Features:** macOS Compatibility

**In-app purchases:** none


### Linus Tester

[App page](https://appshunter.io/ios/app/linus-tester/id1523340677)

This platform collects extensive digital measurements related to brain health, including voice, speech, gait, cognition, and eye movement. It uses machine learning to analyze this data alongside electronic health records, creating precise metrics for evaluating interventions and personalizing brain health recommendations.

**Highlights:** Digital measurement collection, Voice and speech analysis, Gait and cognition tracking, Eye movement monitoring, Machine learning data analysis, Electronic health record integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fusion ePRO free?

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

### Is Linus Tester free?

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

### Which has better reviews, Fusion ePRO or Linus Tester?

Linus Tester is rated higher. Fusion ePRO averages 2.8 out of 5 from 6 ratings, while Linus Tester averages 3.0 from 4 ratings.

### Do Fusion ePRO or Linus Tester have ads?

Neither Fusion ePRO nor Linus Tester shows ads.

### Which is updated more often, Fusion ePRO or Linus Tester?

Fusion ePRO ships an update every 2 months, and Linus Tester every 2 months. Most recently, Fusion ePRO was updated on October 24, 2026 and Linus Tester on October 12, 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.*