Brain Challenge vs IQ Prep

How sharp is your mind? Brain Challenge puts your intelligence to the test with a fast-paced quiz covering 5 key cognitive areas. WHAT YOU GET - 20 carefully crafted questions per challenge - 5 categories: Logic, Math, Patterns, Verbal & Spatial - 30-second timer per question — think fast! - Instant IQ score with detailed breakdown - Personalized IQ certificate to download and share HOW IT WORKS Take the challenge. Answer 20 questions across multiple categories while the clock ticks. When you're done, get your IQ score instantly with a full breakdown of your strengths and weaknesses. FEATURES - 100+ unique questions — no two quizzes are the same - Beautiful dark theme designed for focus - Score breakdown by category - Track your progress over time - Downloadable PDF certificate with your name and score - No account required to play PREMIUM (optional) - Unlimited quizzes — no cooldown - Unlimited certificates - Ad-free experience - Full score analysis Brain Challenge is a fun brain training game designed to test and improve your cognitive abilities. It is not a clinically validated IQ assessment. Download now and discover your Brain Challenge IQ score!

Practise for IQ tests with the item types of real intelligence tests: matrices, number series, figure series, mirror images, operators and digit span. Plus a lab with reaction, attention and memory tasks in which you measurably improve with practice. For aptitude tests, Mensa admission and anyone who wants to know how IQ tests work. IQ TEST ITEMS • Matrices: 3×3 figure matrices as in Raven's test, up to four rules at once, and at higher levels dot patterns that combine, intersect or cancel out • Number series: 28 rule families, from simple differences to interleaved series • Figure series: rotation, count, fill, shape and movement across the grid • Mirror images: rotated or mirrored, with ever-new figures • Operators: insert the operators, precedence applies • Digit span: forwards and backwards, as in the Wechsler test Every item is generated fresh, on five difficulty levels, and after every answer you see the solution step by step. No games, no points: items look like the real test, black figures on a plain background, no animations. LAB: REACTION, ATTENTION, MEMORY Five classic tasks from cognitive psychology to practise: reaction time, Stroop, flanker, Corsi block and dual n-back. With practice you measurably improve at them; a trend curve shows your progress, plus a daily streak. Reaction, attention and memory are tested directly in some selection procedures, such as police or pilot selection. TEST UNDER REAL CONDITIONS 30 items from all categories, 20 minutes, no help until the end. Then a score per category and every wrong item with its solution to work through. SCIENTIFIC BASIS • Practice on the test format measurably improves scores. The meta-analysis by Hausknecht et al. (2007) shows gains of about a quarter of a standard deviation from retesting, more with targeted coaching. • Practising reaction and memory tasks reliably improves performance on exactly those tasks. Whether it transfers to IQ beyond them is disputed (Melby-Lervåg et al. 2016), so IQ Prep does not promise it. • The item types follow established test families: matrices after Raven, digit span after Wechsler (WAIS, WISC), number and figure series as in CogAT and similar batteries. Free to try: three items per category, one full test with mistake review, and three runs of each lab task. Full version $4.99 one time: everything unlimited. No subscription, no ads, no account, no data collection. Training offline, internet only for purchase and restore. IQ Prep is not a standardized intelligence test and does not measure IQ.