Comparison

Brain Flash vs Common Thread Game

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

Head to head
About

Brain Flash

Engage your mind with six unique mini-games designed to boost cognitive abilities. Test your reflexes, memory, and pattern recognition in fast-paced challenges.

Highlights
  • Rock-paper-scissors with color rules
  • Speed card matching
  • True color perception challenge
  • Conditional tapping game
  • Directional swipe game
  • Identify unique patterns
Features
Read full description

One of the best and lightest brain training game ever for iOS You are using 10% of your brain ability. Let’s play Brain Flash Games and activate your mind power with our 6 stunning mini games: ◆ R-P-S (Rock-paper-scissors) Rock beats Scissors, Paper beats Rocks, Scissors beat Paper. The classic mind game comes back with a new rule: you have to WIN when you see the GREEN but you have to LOSE when you see the RED. ◆ PAIR That would be great if you find someone like you. In this speed game, you have to tap 2 CARDS with the SAME character or shape as fast as possible. Don’t think it’s easy, your brain will work 200%. ◆ TRUE COLOR When you see a red CIRCLE, it’s easily to say its COLOR. But if we trick you with a yellow LABEL on the circle, the game will become chaos. You will be confused and wonder why it’s so hard to tap a red circle with label “red”. ◆ ALL OR NOTHING If you see an orange rocket, just tap an orange rocket. Is it a simple game, right? Oh wait, but if you don’t see any orange rocket, you have to tap a blue UFO, which have both different color and shape. OMG, this game is now so crazy! ◆ ONE DIRECTION If you see a shoal of blue fish move to the left, swipe left. If you see a shoal of red fish move up, just swipe down. It’s maybe the easiest game of 6. ◆ THINK DIFFERENT This game is inspired by Apple and Steve Jobs. Just tap the unique fish or jellyfish which has different color and skin pattern to get score. We have taught you all the rules. Are you ready to boost your brain and beats yourself and hackers around the world?

About

Common Thread Game

Connect images by finding their shared theme. This game offers a blend of simple and challenging puzzles that test your observation skills. Unravel hidden links between diverse visuals.

Highlights
  • Image connection puzzles
  • Diverse captivating visuals
  • Simple and challenging gameplay
  • Tests observational skills
  • Hidden link discovery
Features
Read full description

"Common Thread" is an engaging and addictive mobile game that revolves around the concept of connecting images through a common thread. With a diverse range of captivating visuals, players are presented with a series of seemingly unrelated images, and their task is to unravel the hidden connection that ties them together. This game offers a delightful mix of simplicity and challenge, as some threads are easily identifiable, allowing players to quickly make connections. However, other threads will test their observational skills and require a keen eye to spot the underlying link.

Screenshots

Brain Flash4 screens
Common Thread Game4 screens

Verdict

The call

The clearest difference is rating: Common Thread Game at 4.5 against Brain Flash's 3.5. Common Thread Game also leads on update cadence (every 3 months vs every 25 months). Brain Flash's advantage is ads (none vs shown) and ratings volume (26 vs 2). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Common Thread Game holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Brain Flash has 26 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Brain Flash ships an update every 25 months, Common Thread Game every 3 months. Both last shipped on September 30, 2026.

Scorecard6 real differences · 4 level
Brain Flash versus Common Thread Game: the parameters behind the verdict, then further details
ParameterBrain FlashCommon Thread Game
PriceFreeFree
Rating3.5 (26 ratings)4.5 (2 ratings) — better
Positive reviews56.5% of reviews—
Number of ratings26 — better2
Update frequencyEvery 25 monthsEvery 3 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size56 MB36 MB
Age rating4+4+
DeveloperPPCLINK SoftwareDogfish Technologies, LLC

Customer experience

Brain Flash

All ratings26 ratings
Positive61.5%
Neutral3.8%
Negative34.6%
Written reviews46 reviews
Positive56.5%
Neutral13.0%
Negative30.4%

Common Thread Game

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

In-app purchases

None

Brain Flash

No in-app purchases

None

Common Thread Game

No in-app purchases

Questions

Is Brain Flash free?
Brain Flash is free to download, with no in-app purchases.
Is Common Thread Game free?
Common Thread Game is free to download, with no in-app purchases.
Which has better reviews, Brain Flash or Common Thread Game?
Common Thread Game is rated higher. Brain Flash averages 3.5 out of 5 from 26 ratings, while Common Thread Game averages 4.5 from 2 ratings.
Do Brain Flash or Common Thread Game have ads?
Common Thread Game shows ads; Brain Flash does not.
Which is updated more often, Brain Flash or Common Thread Game?
Brain Flash ships an update every 25 months, and Common Thread Game every 3 months. Most recently, Brain Flash was updated on September 30, 2026 and Common Thread Game on September 30, 2026.

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