# Userbrain Recorder vs Optimal Participant

The clearest difference is rating: Userbrain Recorder at 1.3 against Optimal Participant's 1.0. Userbrain Recorder also leads on review sentiment (21% vs 0%) and device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Userbrain Recorder holds the better App Store score, 1.3 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 21% of Userbrain Recorder's written reviews are positive against 0% of Optimal Participant's.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Userbrain Recorder | Optimal Participant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.3 (3 ratings)](https://appshunter.io/ios/app/userbrain-recorder/id929636134/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/optimal-participant/id6755751756/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **20.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 36 MB | 38 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Userbrain GmbH](https://appshunter.io/developer/1539905865) | [Optimal Workshop](https://appshunter.io/developer/1852116975) |

## What reviewers say

### Userbrain Recorder

[App page](https://appshunter.io/ios/app/userbrain-recorder/id929636134)

Earn money by providing feedback on digital products and services. Record your user experience, share your opinions, and receive invitations to test for global brands. The app only records during active testing sessions, ensuring your data privacy.

**Highlights:** Earn money for feedback, Record user experience, Share opinions, Test global brands' products, Easy application process, Data privacy during testing

**Features:** Vision Pro support

**In-app purchases:** none


### Optimal Participant

[App page](https://appshunter.io/ios/app/optimal-participant/id6755751756)

Share your honest feedback on products, websites, and experiences through usability tests and surveys directly from your phone. No logins are required, making it quick and easy to make a real impact on product development.

**Highlights:** Participate in usability tests, Complete surveys, No login required, QR code or link access, Secure data transmission, Shape product development

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

**In-app purchases:** none


## Frequently asked questions

### Is Userbrain Recorder free?

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

### Is Optimal Participant free?

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

### Which has better reviews, Userbrain Recorder or Optimal Participant?

Userbrain Recorder is rated higher. Userbrain Recorder averages 1.3 out of 5 from 3 ratings, while Optimal Participant averages 1.0 from 1 ratings.

### Do Userbrain Recorder or Optimal Participant have ads?

Neither Userbrain Recorder nor Optimal Participant shows ads.

### Which is updated more often, Userbrain Recorder or Optimal Participant?

Userbrain Recorder ships an update every 3 weeks, and Optimal Participant every 3 weeks. Most recently, Userbrain Recorder was updated on October 24, 2026 and Optimal Participant 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.*