Pimon
The fun way to memorize Pi.
Simon for Pi! Pimon lights up the digits — can you remember them? Challenge your memory across 7 game modes, earn 57 achievements, and become a Pi master.
Features
Pimon Game
Pimon lights up the digits — can you remember them? Includes Speak to Me mode. Pause and explore other modes, then come back and resume.
Speed Pi
Race to type Pi as fast as you can across 6 distances: 8, 20, 31, 50, 100, or Endless. One mistake ends the run.
Pure Pi
Type the digits of Pi from memory. How far can you go? Test your recall and beat your personal best.
Memory Insights
Accuracy heatmaps, weak spot analysis, memorized frontier, transition analysis, chunking detection, and trend graphs.
Quiz
28 fun and engaging multiple-choice questions across 4 difficulty levels: Easy, Medium, Hard, and Expert.
Pi Reader
Practice reciting Pi with a coach who follows along on-screen. Perfect for friends, parents, or teachers.
Pi Recall
Digits appear briefly then vanish. Type them from memory before the timer expires.
Achievements & Widgets
Earn 57 badges as you improve. Track progress from your Home Screen with widgets, or use Siri Shortcuts to jump right in.
Screenshots
Simon for Pi
Watch the digits of Pi light up one by one, then tap them back from memory. Start with a few digits, then see how far you can go — with over one million digits loaded, the ceiling is as high as you can reach.
Seven Ways to Train
Pimon isn’t just one game — it’s a full training suite. The classic Pimon mode eases you in with visual and audio cues. Speed Pi turns it into a race. Pure Pi strips everything away and tests raw recall. Pi Recall flashes digits and challenges you to hold them before they disappear.
When you want a break from typing, Quiz mode tests your Pi knowledge with 28 questions across four difficulty levels. Pi Reader lets you practice reciting digits out loud with an on-screen coach — great for classrooms or showing off to friends.
Know Your Memory
Memory Insights goes beyond a simple score. Accuracy heatmaps show exactly which digit transitions trip you up. Weak spot analysis identifies the patterns you struggle with. The memorized frontier tracks how deep into Pi you’ve reliably committed to memory, and trend graphs show your improvement over time.
Built for Pi Day and Beyond
Whether you’re gearing up for Pi Day, competing with friends, or just want a brain workout that’s actually fun — 57 achievements keep you motivated, Home Screen widgets let you check stats at a glance, and Siri Shortcuts drop you straight into any mode.
Privacy
Pimon does not collect or share your personal data. Your progress and stats stay on your device. See our Privacy Policy for details.