Comparison

Learn Pi By Karina vs 3.14 Master Pi

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

Head to head
About

Learn Pi By Karina

This app helps users memorize the digits of Pi by breaking them into smaller, manageable groups. It's inspired by a method used to prepare for Pi Day contests, making memorization more accessible. Features include a testing mode with a scoreboard to track progress.

Highlights
  • Breaks Pi digits into smaller groups
  • Inspired by contest preparation methods
  • Supports memorization of up to 10,000 digits
  • Testing mode with elapsed time scoreboard
  • Track typing speed for Pi digits
Read full description

Pi By Karina is an app which simplifies the learning process in memorizing the digits of Pi. The app is inspired by a technique that my daughter and I utilized in order to assist her for her Pi Contest at school on March 14th (Pi 3.14 = 3/14 = March 14). Other apps available do not break up the digits into simple smaller groups of numbers. Pi By Karina does this! You can learn many more digits of pi by breaking down the group of numbers as you would in learning a new phone number. Add a little tune to it, and you are set! Good luck! See you on Pi Day! Pi By Karina will go to 10,000 digits of Pi! Also when in testing mode, a scoreboard of the elapsed time will appear so you can see and track how many digits of Pi you can type in a certain amount of time!

About

3.14 Master Pi

Features
Read full description

3.14 Master Pi makes learning and memorizing Pi (3.14159) fun, visual, and addictive. Challenge your brain, compete with friends, and discover the hidden beauty of circles, numbers, and logic through sleek, intuitive gameplay. Features: • Learn and memorize Pi by practicing digits in chunks and unlocking new levels. • Speed challenges let you race against time to recall as many digits as you can. • Real-world examples, like the Pizza Value Challenge, show how Pi applies to life. • Track progress with accuracy, streak, and milestone stats. • Customize your theme colors and keypad layout for a personal experience. • Achievements and ranks reward your improvement from "Pi Novice" to "Pi Master." Whether you are a math enthusiast, student, or puzzle lover, Master Pi helps you train your memory and enjoy exploring one of the world’s most fascinating constants. No ads. No distractions. Just pure Pi.

Screenshots

Learn Pi By Karina3 screens
3.14 Master Pi4 screens

Verdict

The call

The clearest difference is in-app purchases: Learn Pi By Karina at none against 3.14 Master Pi's 5. Learn Pi By Karina also leads on iOS requirement (11.4 vs 15.1). 3.14 Master Pi's advantage is update cadence (every 2 months vs every 25 months). On price, ads and device support 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

Both are free to download. 3.14 Master Pi sells 5 one-off in-app purchases. Learn Pi By Karina asks for nothing beyond the download.

UpkeepUpdate frequency

Learn Pi By Karina ships an update every 25 months, 3.14 Master Pi every 2 months. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Learn Pi By Karina versus 3.14 Master Pi: the parameters behind the verdict, then further details
ParameterLearn Pi By Karina3.14 Master Pi
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 25 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better15.1
Further details — not scored
Size1 MB47 MB
Age rating4+4+
DeveloperSanjay Grover MD, FACSDavid Brown

In-app purchases

None

Learn Pi By Karina

No in-app purchases

5 purchases

3.14 Master Pi

One-time5
  • Summation Supporter$2.99
  • Premium (Lifetime)$4.99
  • Radical Patron$9.99
Show 2 more
  • Infinite Supporter$29.99
  • Pi Master$99.99

Questions

Is Learn Pi By Karina free?
Learn Pi By Karina is free to download, with no in-app purchases.
Is 3.14 Master Pi free?
3.14 Master Pi is free to download, with in-app purchases available.
Do Learn Pi By Karina or 3.14 Master Pi have ads?
Neither Learn Pi By Karina nor 3.14 Master Pi shows ads.
Which is updated more often, Learn Pi By Karina or 3.14 Master Pi?
Learn Pi By Karina ships an update every 25 months, and 3.14 Master Pi every 2 months. Most recently, Learn Pi By Karina was updated on November 2, 2026 and 3.14 Master Pi on October 28, 2026.

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