# One Brain vs Memory & Focus Trainer

The clearest difference is in-app purchases: Memory & Focus Trainer at none against One Brain's 1. Memory & Focus Trainer also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price and device support there is nothing between them.

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

One Brain ships an update weekly, Memory & Focus Trainer every 3 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | One Brain | Memory & Focus Trainer |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 46 MB |
| Requires iOS | 15 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Erik Wegener](https://appshunter.io/developer/424482392) | [MINDNEST STUDIO LLC](https://appshunter.io/developer/1890198903) |

## 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


### Memory & Focus Trainer

[App page](https://appshunter.io/ios/app/memory-and-focus-trainer/id6762214485)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Brain free?

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

### Is Memory & Focus Trainer free?

Memory & Focus Trainer is free to download, with no in-app purchases.

### Do One Brain or Memory & Focus Trainer have ads?

One Brain shows ads; Memory & Focus Trainer does not.

### Which is updated more often, One Brain or Memory & Focus Trainer?

One Brain ships an update weekly, and Memory & Focus Trainer every 3 days. Most recently, One Brain was updated on October 13, 2026 and Memory & Focus Trainer on September 29, 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.*