Chemtrix vs Brain Exercise Games
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Chemtrix
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.
- 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
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Chemtrix is a fun arcade style puzzle game where your goal is to build molecules to progress through the game. There are 24 levels to work your way through, and on your journey you will discover the deepest secrets of the universe - how atoms bond and the structures and properties of the molecules they form. You can also play in 'free fall' mode, where new atoms drop continuously into the game board and your goal is to keep building molecules until you out of space. This is a fun game informed by real chemistry, the molecular structures you create and the way the atoms bond to each other are true to life. And extra features like lewis-dot notation and accurate energy calculations will delight discerning chemists.
Brain Exercise Games
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Want a simple to play yet challenging minimalist puzzle game that will take a few minutes or hours? Then you are in the right game! 99 BOX is a puzzle game designed to both entertain and trains your brain. The concept of the game is quite simple; find the correct box on the first line each time and complete 99 levels. That's it! Please don't be fooled by what we say is easy. It may not be easy for everyone. ℹ Assigning numbers to the boxes on the hint screen can make them easier to remember. » Terms and Conditions: https://milowda.app/terms-and-conditions » Privacy Policy: https://milowda.app/privacy-policy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Chemtrix | Brain Exercise Games |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (95 ratings) — better | — |
| Positive reviews | 52.1% of reviews | — |
| Number of ratings | 95 — better | — |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 23 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Woolf | Eray Endes |
Bugs and requests
Chemtrix
Reported bugs
11 issues- Cannot progress past level 8/9
- In-app purchase prompt missing
- Game crashes
- Levels do not unlock after purchase
- Atom spawner glitches
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- Antimatter interaction issues
- Game not scaling for larger screens
- Level 16 impossible
- Game freezes or lags
- Molecule bonding issues
- Game not saving progress
Requested features
12 requests- 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.)
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- Improve touch screen interface
- Add more levels
- Freeplay mode without antimatter
- Introduce 3D molecule representations
- Show formed molecules after game
- Adjustable speed settings
- Scale for bigger screens (iPhone)
Brain Exercise Games
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Chemtrix
- Unlock Chemtrix$0.99
Brain Exercise Games
- 99 Box Unlimited$3.99
Questions
Is Chemtrix free?
Is Brain Exercise Games free?
Do Chemtrix or Brain Exercise Games have ads?
Which is updated more often, Chemtrix or Brain Exercise Games?
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