Infinite Digits Downloads & RevenueInfinite Digits · App Store

How many digits of pi can you remember—and how much do you really know about the numbers behind them?

Infinite Digits turns mathematical constants into a focused, rewarding learning experience. Memorize digits at your own pace, test your recall under pressure, explore the formulas that make each constant meaningful, and watch your skills grow over time.

Go beyond π
Study eight essential mathematical constants:

• Pi (π)
• Euler’s Number (e)
• The Golden Ratio (φ)
• The Euler–Mascheroni Constant (γ)
• Square Root of 2 (√2)
• Square Root of 3 (√3)
• Natural Logarithm of 2, ln(2)
• Apéry’s Constant, ζ(3)

BUILD A MEMORY THAT LASTS

Training Mode gives you a calm, flexible place to practice. Choose a constant, set the number of digits, enter the sequence from memory, and get clear feedback on your result. Start with a short run or work toward hundreds and thousands of digits—the pace is yours.

TAKE ON THE CHALLENGE

Ready to find your limit? Challenge Mode offers seven levels, from a quick 9-digit warm-up to a legendary 9,999-digit test. New levels unlock as your continuous correct prefix improves, giving every session a clear goal and every personal best a reason to keep going.

SEE MORE THAN A SCORE

A single percentage never tells the whole story. Infinite Digits tracks both your longest correct prefix and your position-by-position accuracy, so you can see where your recall is strong and where it breaks down. Review recent sessions, compare constants, follow progress charts, and turn small improvements into lasting momentum.

UNDERSTAND BEFORE YOU MEMORIZE

The Formula Explorer connects digits to ideas. Interactive visuals, sliders, core formulas, and guided steps help you see how each constant appears in geometry, calculus, logarithms, sequences, and number theory.

EXPLORE THE STORIES BEHIND THE SYMBOLS

Open the built-in mathematical encyclopedia to discover each constant’s historical timeline, real-world and scientific applications, and surprising facts. Learn how π evolved from ancient approximations, why e appears in growth and decay, how φ connects to geometry, and why ζ(3) still fascinates mathematicians.

CALCULATE WITH PRECISION

Need more digits for study, reference, or curiosity? Use the Constants Calculator to generate high-precision values, adjust the number of decimal places, preview the result, and copy the full value when you need it.

DESIGNED FOR FOCUSED PRACTICE

• Eight constants in one beautifully organized app
• Adjustable training length
• Seven progressively challenging recall levels
• Detailed session history and performance statistics
• Longest-prefix and positional-accuracy tracking
• Interactive formula visualizations
• Historical timelines, applications, and facts
• High-precision constants calculator
• Ten distinctive light and dark color themes
• Optional sound effects and haptic feedback
• Practice progress saved locally on your device
• Interface support for English, German, French, Spanish, Japanese, Korean, S