Brain It On! vs STEM Defense
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Brain It On!
Engage your mind with tricky physics puzzles. Draw shapes to find creative solutions to increasingly difficult challenges. Compete with friends and discover multiple ways to solve each puzzle.
- Dozens of brain-busting puzzles
- Puzzles added regularly
- Compete with friends
- Multiple solutions per puzzle
- Share unique solutions
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Deceptively challenging puzzles for your brain! Draw shapes to solve challenging physics puzzles. They're not as easy as they look. Care to give one a try? ◆ Dozens of brain busting puzzles, with more being added all the time ◆ Compete with your friends for the Brain It On! crown ◆ Multiple ways to solve each puzzle, can you find the best solution? ◆ Share your unique solutions and compare with your friends If you like this game, please rate it and leave a comment. As a tiny indie developer your support is greatly appreciated. Thank you for your help! If you don't like something in the game, please email me at support@orbitalnine.com and tell me why. I want to hear your feedback and comments so I can continue to make this game better. Follow @orbitalnine on Twitter for all the latest news and updates on this game and upcoming releases. Like the game on Facebook: facebook.com/OrbitalNine Visit online at: orbitalnine.com I hope you enjoy Brain It On!
STEM Defense
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About This Game "STEM Defense" immerses yourself in a strategic battle within the human body, where you manipulate pathways and tower placements on a dynamic hexagonal grid. This educational tower defense game teaches players about the immune system through engaging gameplay, focusing on the defense against microscopic invaders. Key Features Path Expansion: Dynamically extend the pathways pathogens travel to strategically shape each level and increase the effectiveness of your defenses. Tower Placement Strategy: Strategic placement of your towers is essential. Elevate your towers to gain damage bonuses, crucial for optimizing defense effectiveness. Mutation-Based Upgrades: Enhance your defenses through epigenetic modifications, providing temporary boosts, and genetic mutations for permanent enhancements. This mirrors real-life biological defense mechanisms. Experience and Genetic Enhancements: Gain experience to unlock advanced defensive capabilities and permanent genetic upgrades, enhancing your ability to combat pathogens. Varied Enemy Types: Encounter diverse pathogens, each with unique abilities. Develop strategies to handle enemies that can regenerate, accelerate, or spawn additional threats. Endless Replayability: With a multitude of genetic enhancements and adaptive enemy tactics, each game offers new challenges and decisions, ensuring unique experiences with every playthrough. Coming Soon:Acquired immunity mechanics!! Support Independent Development As a solo developer not well-versed in the art of social media, I rely on the support of players like you. If you've enjoyed "STEM Defense," please help spread the word and make it known to others!
Screenshots
Verdict
The clearest difference is price: Brain It On! at Free against STEM Defense's $6.99. STEM Defense's advantage is in-app purchases (none vs 9) and ads (none vs shown). On device support and iOS requirement 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
Brain It On! is free to download; STEM Defense costs $6.99 up front. Brain It On! sells 9 one-off in-app purchases. STEM Defense asks for nothing beyond the download.
Brain It On! ships an update every 3 weeks, STEM Defense every 3 days. The most recent releases landed on October 14, 2026 and August 22, 2026 respectively.
| Parameter | Brain It On! | STEM Defense |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 4.5 (5.2K ratings) — better | — |
| Positive reviews | 80.9% of reviews | — |
| Number of ratings | 5.2K — better | — |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 191 MB | 411 MB |
| Age rating | 4+ | 9+ |
| Developer | Orbital Nine Games Inc | Andrea Carlomaria Sertorio |
Bugs and requests
Brain It On!
Reported bugs
4 issues- Level selector not working past level 220
- Inability to draw near screen edges due to OS gestures
- Hint videos not always helpful
- In-app purchases not working as expected
Requested features
5 requests- More levels
- Level editor to create custom puzzles
- Ability to save progress
- Improved drawing controls
- Better hints and guidance
STEM Defense
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Brain It On!
- Remove Popup Ads$0.99
- The Full Game (75% off)$0.99
- Coin Pack$0.99
Show 6 moreShow fewer
- The Full Game (50% off)$1.99
- Coin Pack$1.99
- The Full Game (25% off)$2.99
- Coin Pack$2.99
- The Full Game$3.99
- Coin Pack$3.99
STEM Defense
No in-app purchases









