SmoothBrain: Brain Age Today

Your birthday says how old you are. SmoothBrain tells the TRUTH — how old you are today, after that night, after that coffee (or lack of it).

90 seconds. 3 games. Zero mercy:

» FLASH — pure reflex. Tap when the screen turns green. Not earlier. Seriously, not earlier. » COLOR TRAP — the Stroop test. The FONT COLOR counts, not the word. Your brain will read. And lose. » SWITCHER — rules change mid-game. Color? Shape? Keep up or autopilot eats you.

At the end you get your MENTAL AGE — based on real mental chronometry (reaction time, interference, task-switching cost) — plus a meme verdict with a stamp: from "5G BRAIN" to "ZOMBIE CERTIFICATE".

Then the best part: send friends a result card with a challenge. Let them prove their brain is younger. They won't.

• Your result changes day to day — play in the morning, after coffee, after the party • NERD MODE — full telemetry: every trial's time, errors, age components • Today's attempt history — get younger before noon • In English, Polish and Spanish • No accounts, no ads, no data collection

It's a game, not a medical diagnosis. You'll still take it personally.