Ink Color Challenge
A Stroop-style task: tap the ink color of a color word and ignore what the word says. Classic interference control.
Research · Stroop, 1935Four skills. One Brain Score.
Play a fast mix of logic, memory, focus, and visual puzzles. Every workout adapts as you improve and takes about four minutes.
COMING SOON ON THEApp Store
Built for iPhone · Entertainment only — not an IQ or medical test.
10 adaptive puzzles
About 4 minutes
Daily Brain Check
Progress over time
Your daily workout
One clear place to begin.
Start with a balanced 10-puzzle workout, take a 90-second Brain Check, or play the shared Daily Challenge. Each mode is short enough to fit into a real day.
- Daily workout
- Brain Check
- Daily Challenge
Small challenges, different skills
The rules change. The rhythm stays fast.
Spot patterns, recall sequences, ignore distractions, and rotate objects in your head. Clear instructions come first; then the game asks for accuracy, speed, or both.
- Logic
- Memory
- Focus
- Visual
Progress that stays readable
See patterns, not just points.
Brain Score summarizes a session while Brain Readiness follows your recent consistency. Category trends help you notice what is improving without turning practice into homework.
- Brain Score
- Brain Readiness
- Skill trends
Brain Pro
More practice when you want it.
Brain Pro unlocks unlimited workouts, personalized training, and complete progress history. The free version still gives you a meaningful daily session before you decide.
- Unlimited workouts
- Full history
- Personalized training
How scoring works
A score you can understand
Brain Score combines accuracy and response time into one session result. It gives you a simple benchmark without pretending to be a clinical IQ score.
10
Accuracy comes first
Each correct answer earns a dependable base score, so careful play is always worth more than a rushed guess.
+6
Speed adds a bonus
Fast correct answers can add up to six points, rewarding fluency without making every puzzle a reaction test.
160
A consistent scale
Every mixed workout uses the same 0–160 range, making recent sessions easy to compare at a glance.
Inside each workout
Puzzle types inspired by real cognitive tasks
Sessions mix short challenges drawn from paradigms used in cognitive psychology — Stroop, flanker, spatial span, mental rotation, and more. Each card explains what you do in the app and points to related research.
Arrow Focus Challenge
A flanker-style task: report the direction of the middle arrow while surrounding arrows try to pull your attention away.
Research · Eriksen & Eriksen, 1974Stop & Go Challenge
A go/no-go challenge: respond quickly to most shapes, then withhold the response when a forbidden target appears.
Research · Diamond, 2013 (review)Block Sequence & Path Recall
Corsi-inspired spatial span: watch positions light up, then tap them back in order. Trains visuospatial working memory.
Research · Kessels et al., 2000Digit Span & N-Back
Hold digits or symbols in mind, update them, and decide whether the current item matches one shown N steps earlier.
Research · Owen et al., 2005Mental Rotation
Decide whether two figures are the same object after rotation — not a mirror image. Built on classic mental-rotation work.
Research · Shepard & Metzler, 1971Sequences & Pattern Grids
Find the rule in number or shape progressions and complete the next step. Close to inductive-reasoning exercises used in cognitive training trials.
Research · ACTIVE trial · Ball et al., 2002Number Pulse & Visual Search
Solve timed arithmetic or spot a target among distractors under time pressure — processing speed and selective attention.
Research · ACTIVE 10-year follow-upFurther reading
What the science actually says
These papers describe the task families behind Brain Puzzle and what large trials found about cognitive practice. They do not claim that this app is a clinical assessment or that playing it raises IQ.
Foundational paper for color–word interference — the basis of our Ink Color Challenge.
Introduced the flanker paradigm used in Arrow Focus Challenge.
Open-access overview of working memory, inhibition, and cognitive flexibility — including Stroop, flanker, and go/no-go.
Showed that comparing rotated shapes takes time proportional to the angle — the core idea behind Mental Rotation.
ACTIVE trial: training memory, reasoning, or processing speed improved the targeted abilities vs. controls.
Long-term follow-up of ACTIVE — durable effects on trained cognitive domains for many participants.
Important caution: working-memory training often shows near transfer; far transfer to general intelligence is limited.
Meta-analysis of computerized cognitive training — modest domain-specific gains when training is well designed.
Bottom line from the literature: practicing a specific cognitive task usually improves that task (near transfer). Broad gains in everyday intelligence or school/work outcomes are much weaker and still debated. Brain Puzzle is designed for short, enjoyable practice — not diagnosis or therapy.
Subscription
Everything in Brain Pro
Upgrade inside the app with monthly or yearly plans. Billing is handled securely by the App Store or Google Play — cancel anytime in your store account settings.
Unlimited brain tests
Free players get one brain test per UTC day. Brain Pro removes the daily cap so you can practice anytime.
Ad-free sessions
Enjoy uninterrupted play with no interstitial ads after completed sessions.
Full stats history
See your complete score history, category performance charts, and 7-day / 30-day trends.
Personalized training
Get a custom 10-puzzle training plan focused on your weakest categories based on recent performance.
Complete results breakdown
View per-category accuracy, speed, and task-by-task details on every results screen.
Restore on any device
Subscriptions are managed through Apple or Google. Restore purchases anytime from Settings.
A better four-minute break is coming.
Brain Puzzle is being prepared for its first iPhone release.
COMING SOON ON THEApp Store