Comparison

Mental Arithmetic Math vs Infinite Digits

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mental Arithmetic Math

Engage in fun arithmetic challenges suitable for all ages. Improve your math skills and concentration with adjustable difficulty levels. Play solo or with friends, even offline, for a quick and enjoyable brain workout.

Highlights
  • Arithmetic challenges
  • Adjustable difficulty
  • Suitable for all ages
  • Play with friends
  • Offline play
  • Improves concentration
Features
Read full description

■ Application Features Have a great time playing with family and friends. Become skilled at arithmetic, useful for your mathematical studies. Play with a difficulty that matches your level. Enjoyable for all ages. Even playing for a short amount of time can be a lot of fun! You can also play offline. Increase your ability to concentrate through brain activation.

About

Infinite Digits

Features
Read full description

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, Simplified Chinese, and Traditional Chinese FOR CURIOUS MINDS AT EVERY LEVEL Infinite Digits is made for students, teachers, math enthusiasts, trivia lovers, competitive memorizers, and anyone who enjoys turning a difficult goal into a daily habit. You do not need to be a mathematician. Start with a few digits, learn the pattern, and build from there. Your next personal best begins with one more digit. Download Infinite Digits and discover how far your memory—and your curiosity—can go.

Screenshots

Mental Arithmetic Math4 screens
Infinite Digits4 screens

Verdict

The call

The clearest difference is price: Mental Arithmetic Math at Free against Infinite Digits's $5.99. Mental Arithmetic Math also leads on update cadence (every 2 months vs every 7 months). Infinite Digits's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Mental Arithmetic Math is free to download; Infinite Digits costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mental Arithmetic Math ships an update every 2 months, Infinite Digits every 7 months. The most recent releases landed on October 11, 2026 and September 16, 2026 respectively.

Scorecard3 real differences · 7 level
Mental Arithmetic Math versus Infinite Digits: the parameters behind the verdict, then further details
ParameterMental Arithmetic MathInfinite Digits
PriceFree — better$5.99
Rating4.4 (90 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings90 — better—
Update frequencyEvery 2 months — betterEvery 7 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size105 MB67 MB
Age rating4+4+
DeveloperSatoshi KonnoSimTeCon GmbH

In-app purchases

None

Mental Arithmetic Math

No in-app purchases

None

Infinite Digits

No in-app purchases

Questions

Is Mental Arithmetic Math free?
Mental Arithmetic Math is free to download, with no in-app purchases.
Is Infinite Digits free?
Infinite Digits costs $5.99, with no in-app purchases.
Do Mental Arithmetic Math or Infinite Digits have ads?
Mental Arithmetic Math shows ads; Infinite Digits does not.
Which is updated more often, Mental Arithmetic Math or Infinite Digits?
Mental Arithmetic Math ships an update every 2 months, and Infinite Digits every 7 months. Most recently, Mental Arithmetic Math was updated on October 11, 2026 and Infinite Digits on September 16, 2026.

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