# Brain Test vs One Brain

The clearest difference is rating: One Brain at 4.4 against Brain Test's 4.1. One Brain also leads on update cadence (weekly vs every 2 weeks) and ratings volume (297 vs 71). Brain Test's advantage is review sentiment (72% vs 59%) and iOS requirement (10.0 vs 15). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Brain Test sells 2 one-off in-app purchases and One Brain sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

One Brain holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 71 and 297 respectively. Written reviews complicate that: 72% of Brain Test's written reviews are positive against 59% of One Brain's, so the app with the better star average is not the one people write more warmly about.

Brain Test ships an update every 2 weeks, One Brain weekly. Both last shipped on September 24, 2026.

## The numbers

| Metric | Brain Test | One Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (71 ratings)](https://appshunter.io/ios/app/brain-test-stroop-effect/id791503877/reviews) | **[4.4 (297 ratings)](https://appshunter.io/ios/app/one-brain/id1229367064/reviews)** |
| Number of ratings | 71 | **297** |
| Positive reviews | **72.4% of reviews** | 58.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 10 MB |
| Requires iOS | **10.0** | 15 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | +4 |
| Developer | [Attila Hegedus](https://appshunter.io/developer/560108934) | [Erik Wegener](https://appshunter.io/developer/424482392) |

## What reviewers say

### Brain Test

[App page](https://appshunter.io/ios/app/brain-test-stroop-effect/id791503877)

Test your selective attention, cognitive flexibility, and processing speed with this psychology-based logic puzzle. Compete with friends and family by identifying the ink color of presented words within a time limit.

**Highlights:** Selective attention test, Cognitive flexibility training, Processing speed improvement, Timed challenges, Multiplayer competition, Color word matching

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Unlock expert mode | $1.99 | one-time |


### One Brain

[App page](https://appshunter.io/ios/app/one-brain/id1229367064)

Test your cognitive abilities with a game inspired by the Stroop effect. Quickly identify matching colors, arrow directions, or true/false math equations under time pressure. Challenge your brain to process conflicting information and achieve high scores.

**Highlights:** Stroop effect inspired gameplay, Color matching challenges, Arrow direction tests, Math equation verification, Timed gameplay, Score tracking

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 👍 Simple and effective brain training
- 🧠 Helps improve focus and concentration
- 🤯 Challenging and addictive gameplay

**What reviewers complain about**

- ⏱️ Timer is too short, needs more time
- 🙄 Excessive ads and interruptions
- 🤖 Inconsistent scoring and feedback

**Reported bugs**

- Incorrect registering of correct answers
- Crashes and freezes on certain devices
- Keyboard controls not working as expected

**Requested features**

- Adjustable difficulty levels
- More game modes and variations
- Option to disable ads or pay for ad-free version


## Frequently asked questions

### Is Brain Test free?

Brain Test is free to download, with in-app purchases available.

### Is One Brain free?

One Brain is free to download, with in-app purchases available.

### Which has better reviews, Brain Test or One Brain?

One Brain is rated higher. Brain Test averages 4.1 out of 5 from 71 ratings, while One Brain averages 4.4 from 297 ratings.

### Do Brain Test or One Brain have ads?

Both Brain Test and One Brain show ads.

### Which is updated more often, Brain Test or One Brain?

Brain Test ships an update every 2 weeks, and One Brain weekly. Most recently, Brain Test was updated on September 24, 2026 and One Brain on September 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.*