# Chemtrix vs Brain Exercise Games

The clearest difference is iOS requirement: Chemtrix at 13.0 against Brain Exercise Games's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Chemtrix sells 1 one-off in-app purchase and Brain Exercise Games sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Chemtrix ships an update weekly, Brain Exercise Games every 9 days. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Chemtrix | Brain Exercise Games |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (95 ratings)](https://appshunter.io/ios/app/chemtrix/id1439593064/reviews)** | — |
| Number of ratings | **95** | — |
| Positive reviews | 52.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 11 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sam Woolf](https://appshunter.io/developer/1439593063) | [Eray Endes](https://appshunter.io/developer/1598523222) |

## What reviewers say

### Chemtrix

[App page](https://appshunter.io/ios/app/chemtrix/id1439593064)

A puzzle game where you build molecules by bonding atoms. Progress through levels, discover atomic secrets, and explore molecular structures. Features a free fall mode for continuous molecule building.

**Highlights:** Build molecules by bonding atoms, 24 challenging levels, Free fall mode for continuous play, Learn atomic bonding and molecular structures, Features Lewis-dot notation, Accurate energy calculations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Chemtrix | $0.99 | one-time |

**What reviewers like**

- 💡 Great concept for learning chemistry
- 🤩 Engaging and fun gameplay
- 👍 Helpful for students
- ✨ Creative app design
- 🧠 Makes chemistry accessible

**What reviewers complain about**

- 💸 Paywall after few levels
- 🐛 Glitchy gameplay and controls
- 🤔 Confusing game mechanics
- 📚 Limited educational content
- ⏳ Slow progression with free version

**Reported bugs**

- Cannot progress past level 8/9
- In-app purchase prompt missing
- Game crashes
- Levels do not unlock after purchase
- Atom spawner glitches

**Requested features**

- Add more elements and compounds
- Include a sandbox mode
- Add a time limit option for levels
- Option to choose between naming structures or vice versa
- Translate to more languages (Spanish, Polish, Vietnamese, etc.)


### Brain Exercise Games

[App page](https://appshunter.io/ios/app/brain-exercise-games-99-box/id1598531719)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 99 Box Unlimited | $3.99 | one-time |


## Frequently asked questions

### Is Chemtrix free?

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

### Is Brain Exercise Games free?

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

### Do Chemtrix or Brain Exercise Games have ads?

Neither Chemtrix nor Brain Exercise Games shows ads.

### Which is updated more often, Chemtrix or Brain Exercise Games?

Chemtrix ships an update weekly, and Brain Exercise Games every 9 days. Most recently, Chemtrix was updated on November 2, 2026 and Brain Exercise Games on November 7, 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.*