How Fast Is
Your Brain?
Test your reflexes, memory, and focus across 10 brain challenges plus the Gauntlet. Discover your RefleX Age, compete on Game Center leaderboards, challenge your friends, and track your streak right from your Home Screen.
See It in Action
Ten challenges that test every aspect of your cognitive speed.
Home Screen
Ten brain tests at your fingertips
RefleX Age Result
Animated score reveal with percentile
The Gauntlet
All 10 tests, one overall score
Go / No-Go
Tap on green, hold on red
Number Order
Tap 1 to 25 as fast as you can
Stroop Test
Name the ink color, not the word
Test History
Heatmap, records, and your trend
Achievements
Goals and progress to chase
Share Results
Challenge friends with shareable cards
10 Brain Challenges
Target Tap
Tap 10 targets as fast as you can. Pure reaction speed — how quick are your fingers?
Color Reaction
Wait for the screen to change color, then react. Tests your visual processing speed.
Sequence Memory
Remember and repeat growing tile patterns. How far can your memory stretch?
Chimp Test
Can you beat a chimpanzee? Memorize numbers and tap them in order before they hide.
Visual Memory
Recall tile patterns that grow progressively harder. Tests your spatial memory.
Math Speed
Solve 10 arithmetic problems as fast as you can. Addition, subtraction, multiplication.
Word Memory
Words appear one at a time. Have you seen it before or is it new? Your brain will trick you.
Stroop Test
The word says RED but it's written in blue. Pick the ink color, not the word. Harder than it sounds.
Go / No-Go
Tap on green, hold on red. Measures impulse control, not just raw speed. One wrong tap costs you.
Number Order
Find 1 to 25 in a shuffled grid, in order, against the clock. A classic test of visual search.
RefleX Age Score
Every test calculates your RefleX Age with percentile ranking. Track your progress over time.
New in 2.0
The Gauntlet
Take all 8 tests back to back for one overall RefleX Age. The ultimate measure of your mind's speed.
Home & Lock Screen Widgets
Your streak, daily challenge, and brain-age trend at a glance — right from your Home and Lock Screen.
Siri & Shortcuts
Ask “What's my RefleX Age?” or jump straight into today's challenge from Siri, Shortcuts, or Spotlight.
Daily Challenges & Streaks
A fresh test every day with streak milestones, celebrations, and reminders so you never lose your run.
Compete & Challenge
9 Game Center leaderboards including a combined Overall board, 9 achievements, and challenge friends to beat your score.
Built for Everyone
Color Blind Mode with shape cues, Reduce Motion support, and clearer results. Plus Remove Ads Forever — a one-time, Family Shareable purchase.
Challenge Your Brain
Download RefleX and discover your Brain Age today.