# Chain Of Thought vs Brain Test

The clearest difference is ads: Chain Of Thought at none against Brain Test's shown. Chain Of Thought also leads on ratings volume (248 vs 71). Brain Test's advantage is update cadence (every 2 weeks vs every 3 months) and review sentiment (72% vs 60%). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Chain Of Thought sells 7 one-off in-app purchases and Brain Test sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.1 for Chain Of Thought against 4.1 for Brain Test. Both are backed by a comparable volume of ratings — 248 and 71 respectively. Written reviews are what separate them: 60% of Chain Of Thought's written reviews are positive against 72% of Brain Test's.

Chain Of Thought ships an update every 3 months, Brain Test every 2 weeks. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Chain Of Thought | Brain Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (248 ratings)](https://appshunter.io/ios/app/chain-of-thought/id503575375/reviews) | **[4.1 (71 ratings)](https://appshunter.io/ios/app/brain-test-stroop-effect/id791503877/reviews)** |
| Number of ratings | **248** | 71 |
| Positive reviews | 60.0% of reviews | **72.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 38 MB | 9 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Jay Bacal](https://appshunter.io/developer/436790004) | [Attila Hegedus](https://appshunter.io/developer/560108934) |

## What reviewers say

### Chain Of Thought

[App page](https://appshunter.io/ios/app/chain-of-thought/id503575375)

This word association game challenges your mind with clever puzzles. Connect words in a chain without typing, using a simple tap interface. Enjoy multiple play modes and earn achievements.

**Highlights:** Easy to learn, Clever puzzles for mental workout, Solo play mode, Pass 'n play mode, Online play mode, No typing required, Two levels of hints

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vacation Puzzle Pack | $0.99 | one-time |
| Pastry Puzzle Pack | $0.99 | one-time |
| Kittens Puzzle Pack | $0.99 | one-time |
| Hugs Puzzle Pack | $0.99 | one-time |
| Roses Puzzle Pack | $0.99 | one-time |
| Laughs Puzzle Pack | $0.99 | one-time |
| Unlock ALL Levels | $3.99 | one-time |

**What reviewers like**

- 🚀 Excellent game
- 👍 Fun and addictive
- 💡 Clever concept
- 🧠 Challenges the brain
- 🎮 Enjoyable gameplay

**What reviewers complain about**

- 🐛 Bugs and glitches
- 💰 Too many in-app purchases
- 🚫 Limited free content
- 🇺🇸 Too American-centric
- 🤔 Illogical word associations

**Reported bugs**

- Game crashes or freezes
- Progress not saved properly
- Overlapping UI elements
- Incorrect word associations accepted
- Inconsistent performance across devices

**Requested features**

- More levels and content
- Accessibility options for the blind
- Localization for other languages
- Customizable themes and visuals
- Time trial or competitive modes


### 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 |


## Frequently asked questions

### Is Chain Of Thought free?

Chain Of Thought is free to download, with in-app purchases available.

### Is Brain Test free?

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

### Which has better reviews, Chain Of Thought or Brain Test?

Brain Test is rated higher. Chain Of Thought averages 4.1 out of 5 from 248 ratings, while Brain Test averages 4.1 from 71 ratings.

### Do Chain Of Thought or Brain Test have ads?

Brain Test shows ads; Chain Of Thought does not.

### Which is updated more often, Chain Of Thought or Brain Test?

Chain Of Thought ships an update every 3 months, and Brain Test every 2 weeks. Most recently, Chain Of Thought was updated on November 11, 2026 and Brain Test on November 6, 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.*