Comparison

Learn Pi By Karina vs PiMemory

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

PiMemory

Features
Read full description

PiMemory is a fun app to learn and memorize the digits of π. In Game Mode, you can enter numbers to challenge yourself and set high scores up to 3,000 decimal places. In Learn Mode, you can view and practice π up to 3,000 decimal places repeatedly. Key Features: - Game Mode: Challenge yourself by matching π digits using the numeric keypad (up to 3,000 decimal places) - Learn Mode: Check and practice π digits as far as you want (up to 3,000 decimal places) - High Score Management: Save and update your personal records - Intuitive UI: Optimized design for both iPhone and iPad - Ads: Banner ads for free use (privacy-compliant) Have fun memorizing π with PiMemory while improving your focus and memory skills!

Screenshots

Learn Pi By Karina3 screens
PiMemory4 screens

Verdict

The call

The clearest difference is ads: Learn Pi By Karina at none against PiMemory's shown. Learn Pi By Karina also leads on iOS requirement (11.4 vs 16.6). PiMemory's advantage is update cadence (fortnightly vs every 25 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Learn Pi By Karina ships an update every 25 months, PiMemory fortnightly. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Learn Pi By Karina versus PiMemory: the parameters behind the verdict, then further details
ParameterLearn Pi By KarinaPiMemory
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 25 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.4 — better16.6
Further details — not scored
Size1 MB11 MB
Age rating4+4+
DeveloperSanjay Grover MD, FACSYounghan Kim

In-app purchases

None

Learn Pi By Karina

No in-app purchases

None

PiMemory

No in-app purchases

Questions

Is Learn Pi By Karina free?
Learn Pi By Karina is free to download, with no in-app purchases.
Is PiMemory free?
PiMemory is free to download, with no in-app purchases.
Do Learn Pi By Karina or PiMemory have ads?
PiMemory shows ads; Learn Pi By Karina does not.
Which is updated more often, Learn Pi By Karina or PiMemory?
Learn Pi By Karina ships an update every 25 months, and PiMemory fortnightly. Most recently, Learn Pi By Karina was updated on October 29, 2026 and PiMemory on October 28, 2026.

Other comparisons