# One Brain vs Colors

The clearest difference is in-app purchases: Colors at none against One Brain's 1. One Brain's advantage is update cadence (weekly vs every 4 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. One Brain sells 1 one-off in-app purchase. Colors asks for nothing beyond the download.

One Brain ships an update weekly, Colors every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | One Brain | Colors |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (297 ratings)](https://appshunter.io/ios/app/one-brain/id1229367064/reviews)** | — |
| Number of ratings | **297** | — |
| Positive reviews | 58.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 6 MB |
| Requires iOS | **15** | 17.5 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Erik Wegener](https://appshunter.io/developer/424482392) | [Hector Pedro Toledo](https://appshunter.io/developer/1701292864) |

## What reviewers say

### 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


### Colors

[App page](https://appshunter.io/ios/app/colors-brain-reflex-game/id6760432147)

**In-app purchases:** none


## Frequently asked questions

### Is One Brain free?

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

### Is Colors free?

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

### Do One Brain or Colors have ads?

Both One Brain and Colors show ads.

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

One Brain ships an update weekly, and Colors every 4 months. Most recently, One Brain was updated on October 24, 2026 and Colors 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.*