Frequently asked questions
Everything you wanted to know before — and during — your first session.
Do I need to sign up to play?
No. Every game is 100% free to play right now. Creating a free account lets you save your scores, track your daily streak, and build a personal Cognitive Index across devices.
Is this a real IQ test?
No — and we'd be suspicious of any free website that claims to be one. These games are mapped to the Cattell–Horn–Carroll model that underpins modern IQ assessment, but your Cognitive Index here is a practice score, not a clinical measurement.
How long does it take?
The full Daily Workout runs all ten games in about ten minutes. Individual games take 60–90 seconds each.
Can I really score 100%?
Difficulty adapts to you. Every correct answer pushes the level up, so perfect accuracy is rare — and a real flex. Most players plateau around level 5.
Will it work on my phone?
Yes. The whole experience is built mobile-first. Tap, drag, and play — no app to install.
What about my data?
Your scores live in your browser by default. If you sign in, they sync to your account. We use lightweight analytics with opt-in consent — you control what's tracked from the footer.
What is the Cognitive Index?
It's a single number combining your accuracy, speed, and peak difficulty across the ten games. It moves with practice — treat it as a personal fitness score for your brain, not a clinical IQ.
Ready to try? Play a game →