# ResearchApp vs PROBr

The clearest difference is review sentiment: PROBr at 100% against ResearchApp's 0%. PROBr also leads on rating (5.0 vs 2.0) and ratings volume (5 vs 1). ResearchApp's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

PROBr holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: PROBr has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of ResearchApp's written reviews are positive against 100% of PROBr's.

ResearchApp ships an update fortnightly, PROBr every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | ResearchApp | PROBr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/researchapp-join-a-study/id1494456384/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/probr-join-research-studies/id6756816674/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 172 MB | 44 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Healthbit LTD](https://appshunter.io/developer/940551025) | [PROBR COMP LTD](https://appshunter.io/developer/1863082616) |

## What reviewers say

### ResearchApp

[App page](https://appshunter.io/ios/app/researchapp-join-a-study/id1494456384)

Participate in medical research studies by entering a unique token code. Track your health information and share data with research teams, including HealthKit integration. This app facilitates the discovery of new medicines and improved health outcomes.

**Highlights:** Join consented research studies, Enter unique token codes, Track health questionnaires, Connect to HealthKit, Share data with research teams, Facilitates medicine discovery

**Features:** macOS Compatibility

**In-app purchases:** none


### PROBr

[App page](https://appshunter.io/ios/app/probr-join-research-studies/id6756816674)

This platform connects individuals with researchers to facilitate more inclusive and accessible medical studies. It helps users find studies matching their health profiles, contribute to medical advancements, and potentially earn rewards or access care.

**Highlights:** Find research studies matching health profile, Join studies to advance medicine, Earn rewards or access free care, Track participation history, Receive study updates, Empower community through research representation

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

**In-app purchases:** none


## Frequently asked questions

### Is ResearchApp free?

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

### Is PROBr free?

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

### Which has better reviews, ResearchApp or PROBr?

PROBr is rated higher. ResearchApp averages 2.0 out of 5 from 1 ratings, while PROBr averages 5.0 from 5 ratings.

### Do ResearchApp or PROBr have ads?

Neither ResearchApp nor PROBr shows ads.

### Which is updated more often, ResearchApp or PROBr?

ResearchApp ships an update fortnightly, and PROBr every 6 weeks. Most recently, ResearchApp was updated on October 24, 2026 and PROBr on October 24, 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.*