# Co vs Brain Training

The clearest difference is review sentiment: Brain Training at 43% against Co's 0%. Brain Training also leads on rating (4.7 vs 3.3) and update cadence (every 4 days vs every 2 months). Co's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Brain Training holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Brain Training has 6.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Co's written reviews are positive against 43% of Brain Training's.

Co ships an update every 2 months, Brain Training every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Co | Brain Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/co-deo/id1562076177/reviews) | **[4.7 (6.3K ratings)](https://appshunter.io/ios/app/brain-training-logic-puzzles/id6599857869/reviews)** |
| Number of ratings | 4 | **6.3K** |
| Positive reviews | 0.0% of reviews | **42.7% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | **Free** | Ad-supported |
| Size | 57 MB | 96 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QuestionPro.com](https://appshunter.io/developer/735011822) | [SocialLoop LLC](https://appshunter.io/developer/1552557342) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/co-deo/id1562076177)

Participate in weekly surveys, polls, and forum discussions to share your opinions and experiences. Earn points for your engagement, redeemable for gift cards. All data is used for research purposes.

**Highlights:** Weekly exercises, Topics and forums, Online surveys, Quick polls, Earn points, Redeem for gift cards

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

**In-app purchases:** none


### Brain Training

[App page](https://appshunter.io/ios/app/brain-training-logic-puzzles/id6599857869)

Engage in daily mental fitness with a color-sorting challenge that sharpens reasoning, focus, and planning skills. Enjoy calming, timer-free gameplay with hundreds of unique puzzles designed for steady cognitive progression.

**Highlights:** Daily mental fitness sessions, Color-sorting logic puzzles, Strengthens reasoning and focus, Calming, timer-free gameplay, Hundreds of unique puzzles, Instant level restart

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

**In-app purchases:** none

**What reviewers like**

- 🤩 Fun and addictive gameplay
- 🧠 Challenging and brain-stimulating
- 👍 Great for passing time

**What reviewers complain about**

- 🤬 Excessive ads after every level
- 🐛 Frequent freezing and crashing issues
- 💰 Feels like a money-grabbing game

**Reported bugs**

- Game freezes after completing levels
- Reset and undo buttons not working properly
- Bonus levels not solvable

**Requested features**

- Option to remove ads
- Improved stability and performance


## Frequently asked questions

### Is Co free?

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

### Is Brain Training free?

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

### Which has better reviews, Co or Brain Training?

Brain Training is rated higher. Co averages 3.3 out of 5 from 4 ratings, while Brain Training averages 4.7 from 6.3K ratings.

### Do Co or Brain Training have ads?

Brain Training shows ads; Co does not.

### Which is updated more often, Co or Brain Training?

Co ships an update every 2 months, and Brain Training every 4 days. Most recently, Co was updated on October 24, 2026 and Brain Training on October 25, 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.*