# ColorBrain: Brain Training — Attention & Reaction Speed

> Attention & Reaction Speed (iPhone/iPad app by Bogdan Nikishin.)

- Source: https://appshunter.io/ios/app/colorbrain-brain-training/id6758952446 (this page in markdown: same URL + `.md`)
- Developer: [Bogdan Nikishin](https://appshunter.io/developer/1735946582)
- Category: Games, Education, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Arabic, French (France), German (Germany), Hebrew, Hindi, Italian, Japanese, Korean, Brazilian Portuguese and 3 more
- Released: 2026-03-06
- Data updated: 2026-07-17
- User reviews in markdown: https://appshunter.io/ios/app/colorbrain-brain-training/id6758952446/reviews.md

## What is ColorBrain?

Train your brain in just 2 minutes a day.

ColorBrain uses scientifically validated neuropsychological tests — the Stroop Test and Eriksen Flanker Task — to sharpen your attention, boost reaction speed, and strengthen cognitive control.

HOW IT WORKS
▸ Color Mode (Stroop Test): See a word, tap the color the text is written in — not the meaning. Red text spelling "BLUE"? Tap red. Easy to understand, hard to master.
▸ Direction Mode (Flanker Task): Tap the direction of the center arrow while ignoring the flanking distractors. Focus is everything.

WHY IT WORKS
These are gold-standard tests used by neuroscientists worldwide. Regular practice builds selective attention, cognitive flexibility, and mental processing speed.

ADAPTIVE DIFFICULTY
ColorBrain watches your performance in real time. Accuracy above 85%? It pushes you harder. Struggling? It eases back. You're always in the optimal learning zone.

TRACK YOUR PROGRESS
See your accuracy, reaction times, difficulty progression, and daily streak after every session. Premium unlocks full 30-day analytics and advanced performance graphs.

JUST 2 MINUTES A DAY
Build a daily habit and watch your focus sharpen over time.

PREMIUM FEATURES
• Unlimited daily training sessions
• Full 30-day statistics & graphs
• Advanced reaction time analytics
• Streak protection (1 skip per week)
• All 5 adaptive difficulty levels

No ads. No internet required. Pure science-backed brain training.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Annual Plan (Best Value) | $29.99 | per year |



## Version history (last 2 releases)

### 1.2 — 2026-07-08

What's new in 1.2:

• 2 NEW training modes!
• Impulse — a Go/No-Go self-control test: tap only when it's green
• Numbers — find the numbers in order and train your visual attention
• Daily Challenge — one special 60-second run per day, the same for everyone. Compare yourself with other players!
• Attention Index — track your overall cognitive progress
• Bug fixes and improvements

Happy training!

### 1.0 — 2026-03-06

No release notes.

## More apps by Bogdan Nikishin

- [Cozy Ball](https://appshunter.io/ios/app/cozy-ball/id6479428845)
- [LDream – AI Dream Journal](https://appshunter.io/ios/app/ldream-ai-dream-journal/id6758800942)
- [Aliner: Aligner Tracker](https://appshunter.io/ios/app/aliner-aligner-tracker/id6779657332)

All apps by Bogdan Nikishin: https://appshunter.io/developer/1735946582

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*