Comparison

Brain It On! vs STEM Defense

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Dozens of brain-busting puzzles
  • Puzzles added regularly
  • Compete with friends
  • Multiple solutions per puzzle
  • Share unique solutions
Features
Read full description

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!

About

STEM Defense

Features
Read full description

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

Brain It On!4 screens
STEM Defense4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Brain It On! versus STEM Defense: the parameters behind the verdict, then further details
ParameterBrain It On!STEM Defense
PriceFree — better$6.99
Rating4.5 (5.2K ratings) — better—
Positive reviews80.9% of reviews—
Number of ratings5.2K — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size191 MB411 MB
Age rating4+9+
DeveloperOrbital Nine Games IncAndrea 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

9 purchases

Brain It On!

One-time9
  • Remove Popup Ads$0.99
  • The Full Game (75% off)$0.99
  • Coin Pack$0.99
Show 6 more
  • 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
None

STEM Defense

No in-app purchases

Questions

Is Brain It On! free?
Brain It On! is free to download, with in-app purchases available.
Is STEM Defense free?
STEM Defense costs $6.99, with no in-app purchases.
Do Brain It On! or STEM Defense have ads?
Brain It On! shows ads; STEM Defense does not.
Which is updated more often, Brain It On! or STEM Defense?
Brain It On! ships an update every 3 weeks, and STEM Defense every 3 days. Most recently, Brain It On! was updated on October 14, 2026 and STEM Defense on August 22, 2026.

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