ReflexJet vs Stroop Challenge Go

How fast is your brain? Find out. ReflexJet measures your cognitive abilities across 12 scientific brain tests — reaction time, memory, speed, focus and pattern recognition. Get your Brain Score (0-100), climb the tier system, and see how you compare to the world. 12 BRAIN TESTS ▸ REACTION TIME — Tap as fast as you can when the screen turns green. Average over 5 rounds. ▸ SEQUENCE MEMORY — Watch the pattern, repeat it back. Simon-says on a 3x3 grid. ▸ NUMBER MEMORY — Memorize a growing number, then type it from memory. ▸ AIM TRAINER — Hit 30 targets as fast as possible. Precision meets speed. ▸ STROOP TEST — The word says "Blue" but it's painted red. Tap the color, not the word. ▸ CHIMP TEST — Numbers appear, then hide. Tap them in order. Can you beat a chimp? ▸ TYPING SPEED — Type the sentence as fast and accurately as you can. Measured in WPM. ▸ VISUAL MEMORY — Tiles flash on a grid. Remember which ones lit up. ▸ VERBAL MEMORY — Words appear one by one. Have you seen this word before? ▸ GO / NO-GO — Tap green circles, ignore red ones. Speed ramps up. Don't slip. ▸ TRAIL MAKING — Numbers scattered on screen. Tap 1 through 25 in order, fast. ▸ SPEED MATCH — Two symbols flash. Same or different? You have 3 seconds. BRAIN SCORE & TIERS Every test contributes to your Brain Score (0-100) — a single number that captures your overall cognitive performance. Earn your tier: Elite, Fast, Average, or keep pushing. LEVEL UP XP system with 50 levels. Earn XP for every test, bonus XP for personal bests and elite scores. 17 achievements to unlock across reaction speed, memory, typing and more. COMPETE - Daily Challenge — one test per day, same for everyone worldwide - Ranked Mode — 6 random mini-tests, one combined score - 1v1 Multiplayer — invite a friend with a 6-digit code, play the same tests head-to-head - Global Leaderboards — weekly rankings TRACK EVERYTHING Per-test history, personal bests, streak tracking, and detailed stats. Watch your brain get faster over time. MORE - Works offline — syncs when you're back online - Dark & light themes - Sound effects and haptic feedback (toggleable) - 10 languages supported - No account required For gamers, students, and anyone curious about their cognitive performance.

Stroop Challenge is a precision cognitive training tool based on the Stroop Effect — one of the most replicated findings in experimental psychology — measuring interference between word reading and color recognition. THE SCIENCE: The Stroop Effect demonstrates that automatic processing (word reading) can interfere with controlled processing (color identification). Regular exposure to Stroop-type stimuli has been associated with improved selective attention, cognitive flexibility, and processing speed. TWO VALIDATED MODES: • Classic (Color-Naming) — Identify the ink color of the presented word. Suppresses automatic reading response. • Word Match (Word-Reading) — Identify the color named by the word. Tests semantic processing independence. METRICS TRACKED: • Score per round (accuracy × speed composite) • Best accuracy rate (percentage of correct responses) • Fastest average reaction time (milliseconds per response) • Session totals: rounds played, correct and incorrect responses • Combo chains: consecutive correct responses DIFFICULTY SCALING: • Easy: 4 color stimuli (Red, Blue, Green, Yellow) • Medium: 5 color stimuli (adds Purple) • Hard: 6 color stimuli (adds Orange) DATA PRIVACY: All data is stored locally via UserDefaults. No network requests are made. No personal information is collected, transmitted, or shared. The app functions completely offline. Ideal for daily cognitive warm-up, focus training, or simply exploring one of psychology's most fascinating phenomena.