Comparison

BattleBrain vs Blue Defense!

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

Head to head
About

BattleBrain

Enhance memory and concentration with this addictive card matching game. Enjoy multiple game modes, including single player, two-player versus, and a computer battle mode. Unlock new environments and card decks for endless fun.

Highlights
  • Memory and concentration improvement
  • Single player mode with high scores
  • 2-player versus mode
  • Computer battle mode
  • Unlockable bonus content
  • Customizable game options
Features
Read full description

Great for all ages! Extremely fun and terrifically addictive with unlimited hours of game play. Improve memory and concentration while having fun! BATTLEBRAIN is the perfect game to help improve brain power and learning ability. With bright and fun graphics, enjoy multiple game modes including Single Player, 2 Player versus mode, and Battle the Brain mode. Simply match the cards, earning extra bonus points for each match you get in a row. Unlock bonus features for more fun! Features: * Completely random shuffles, never play the same game twice * Play single player mode with saved high scoring * Play 2-player versus mode with a friend. See who has the better memory * Play against the computer in BRAIN BATTLE mode * Just pick up and play with clear on-screen instructions * High quality music and sound effects put you into the game * Complete customizable game options including savable settings * Improves memory and concentration while entertaining at the same time. * Unlockable bonus environments and backgrounds * Unlockable bonus card decks

About

Blue Defense!

Defend your planet from an relentless invasion force. This action-packed game challenges your reflexes and strategic thinking as you manage increasing pressure from attackers. Experience classic gameplay with modern features like level selection and global leaderboards.

Highlights
  • Classic mode gameplay
  • Quick Start difficulty selection
  • Level Select for practice and medals
  • Global High Scores list
  • Save state functionality
  • Tilt controls for aiming
Features
Currently charting
Read full description

Defend your planet! Blue Defense puts you in charge of protecting your world from an invasion force that wants nothing more than your utter destruction. 6.7 billion lives hang in the balance... are your hands steady enough to handle the ever-increasing pressure of the attackers? Features: - Classic mode: play the game as it was in the original game - Quick Start mode: choose a starting difficulty! - Level Select mode: practice individual levels, start the game on your favourite level, or try to earn medals! - Clean, oldschool graphical style - Global High scores list - Save state ensures that you can leave and come back to your game at any time Controls: - Hold the device upright - Tilt left and right to control the stream of bullets - Double-tap the screen to pause Reviews: "If you like shooters, you should just get this game ... it’s all about the gameplay." -Touch Arcade "Fantastic, simple, fun, wonderful game. Very unexpected but very much appreciated." -148Apps "the way it effortlessly shifts from style to style and handles motion controls make[s it] fresh in a decades-old genre. It's a bullseye for any shooter fan." -Maclife "Blue Defense! is tastefully designed and brimming with twists, turns and tongue biting. Its polished graphics, smooth animation and habit-forming gameplay are praiseworthy." -TouchMyApps "A great space shooter that utilizes the iPhones controls to the max." -Everyday Gamers "Apple has finally released the [2.0] update and it does NOT disappoint." -The APPera "'Tilt to aim. Bullets shoot straight up.' I said, 'that’s it?' The answer was a wall of red death streaming down towards my planet." -appleiphoneapps.com

Screenshots

BattleBrain4 screens
Blue Defense!4 screens

Verdict

The call

The clearest difference is price: BattleBrain at Free against Blue Defense!'s $0.99. BattleBrain also leads on rating (5.0 vs 4.1) and iOS requirement (9.0 vs 16.0). Blue Defense!'s advantage is update cadence (every 4 months vs every 28 months) and chart position (#198 vs unranked). On ads, in-app purchases and device support 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

BattleBrain is free to download; Blue Defense! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BattleBrain holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

UpkeepUpdate frequency

BattleBrain ships an update every 28 months, Blue Defense! every 4 months. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 4 level
BattleBrain versus Blue Defense!: the parameters behind the verdict, then further details
ParameterBattleBrainBlue Defense!
PriceFree — better$0.99
Rating5.0 (2 ratings) — better4.1 (9 ratings)
Positive reviews—84.0% of reviews
Number of ratings29 — better
Update frequencyEvery 28 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#198 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.0
Further details — not scored
Size20 MB9 MB
Age rating4+9+
DeveloperDVide Arts Inc.Cat in a Box Software

Customer experience

BattleBrain

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Blue Defense!

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews156 reviews
Positive84.0%
Neutral7.7%
Negative8.3%

Bugs and requests

BattleBrain

Not enough reviews yet to summarise bugs or requests.

Blue Defense!

Reported bugs

2 issues
  • Crashes on newer iOS versions
  • Medals not saving properly

Requested features

5 requests
  • Add sound effects and background music
  • Option to invert or adjust controls
  • Gradual difficulty increase
  • Power-ups and weapon upgrades
  • Global high score leaderboards

In-app purchases

None

BattleBrain

No in-app purchases

None

Blue Defense!

No in-app purchases

Questions

Is BattleBrain free?
BattleBrain is free to download, with no in-app purchases.
Is Blue Defense! free?
Blue Defense! costs $0.99, with no in-app purchases.
Which has better reviews, BattleBrain or Blue Defense!?
BattleBrain is rated higher. BattleBrain averages 5.0 out of 5 from 2 ratings, while Blue Defense! averages 4.1 from 9 ratings.
Do BattleBrain or Blue Defense! have ads?
Neither BattleBrain nor Blue Defense! shows ads.
Which is updated more often, BattleBrain or Blue Defense!?
BattleBrain ships an update every 28 months, and Blue Defense! every 4 months. Most recently, BattleBrain was updated on October 27, 2026 and Blue Defense! on October 29, 2026.

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