π

Pimon

The fun way to memorize the digits of Pi. Challenge your memory, earn achievements, and become a Pi master!

3.14159265358979323846...
Download on the App Store

Ways to Play

Whether you're a beginner or a Pi enthusiast, Pimon has something for everyone.

🎮

Pimon Game

Simon for Pi! Pimon lights up the digits, can you remember them? Speak to me mode included! 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. Each distance has its own leaderboard.

✍️

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. See exactly where to improve.

🧠

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. 25 digits free, unlimited with Pro.

🔮

Pi Recall

Digits appear briefly then vanish. Type them from memory before the timer expires. A vanishing digits challenge for your memory.

🏆

Achievements

Earn dozens of badges as you improve. Track your progress, unlock achievements, and share your accomplishments!

📱

Widgets & Siri

Check your stats from your Home Screen with widgets. Use Siri Shortcuts to jump right into the action.

Download on the App Store

How Pimon Works

Simple to learn, challenging to master.

1

Watch & Listen

Pimon plays a sequence of Pi digits with lights and sounds.

2

Repeat

Tap the digits in the same order to match the sequence.

3

Level Up

Each round adds another digit. How far can you go?

Interactive Animations

Explore fun facts about Pi and watch interactive animations that bring the math to life.

π

Circle & Pi

See why Pi is the ratio of circumference to diameter.

Monte Carlo

Random darts estimate Pi before your eyes.

Pi Walk

Watch Pi's digits trace a path through space.

Buffon's Needle

Drop needles to discover Pi through probability.

Leibniz Series

Watch an infinite series converge to Pi.

Fourier Waves

See how sine waves and Pi build any shape.

Standing Waves

Vibrating strings reveal Pi in harmonics.

𝒩

Gaussian Pi

The bell curve hides Pi at its core.

𝑒

Euler's Identity

The most beautiful equation in mathematics.

ψ

Quantum Interference

Pi emerging from the double-slit experiment.

1M+
Digits of Pi included
57
Achievements to unlock
6
Speed Pi races
10
Interactive animations

Ready to Challenge Your Memory?

Download Pimon today and start your journey to Pi mastery!

Download on the App Store

Pimon does not collect, store, or share any personal information. Your Game Center data is handled by Apple. See our Privacy Policy.

Pimon is built with accessibility in mind so everyone can enjoy learning pi. See our Accessibility page.