Comparison

Pi Digits vs Coldoku

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

Head to head
About

Pi Digits

Test your ability to memorize and recall digits of Pi. Engage in fast-paced challenges to extend your streak and improve your number recall. Ideal for students, puzzle enthusiasts, or anyone seeking a quick mental workout.

Highlights
  • Memorize digits of Pi
  • Classic typing mode
  • Timed Blitz mode
  • Track best streaks
  • Quick brain workouts
  • Suitable for all levels
Features
Read full description

How many digits of π can you really remember? Pi Digits turns memorizing pi into a fast, addictive challenge - perfect for Pi Day, school contests, or anyone who loves number puzzles. Start at 3.14159… and see how far your memory can go. THREE WAYS TO PLAY • Classic Mode: Type the next digit and build your streak one number at a time. • Blitz Mode: You've got 10 seconds—go as far as you can before the clock runs out. • Practice Mode: Optionally reveal the next digit as you go, with no fails - just relaxed, low-pressure practice. WHY YOU'LL LOVE PI DIGITS • Train your recall: A simple loop that makes practice feel like a game • Quick sessions: Perfect for a short brain workout anytime • Track your best run: Beat your personal record and level up your pi knowledge • Statistics: See your progress and stats over time • Fun for all levels: From beginners learning the first digits to serious memorizers MADE FOR PI FANS (AND FUTURE PI FANS) Whether you're preparing for a classroom competition, challenging friends, or just want a satisfying memory test, Pi Digits is a focused way to practice and improve. Ready to become a Pi master? Download Pi Digits and start your streak today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription required to access all features.

About

Coldoku

This logic game offers a colorful twist on classic Sudoku, replacing numbers with distinct shapes and hues. The objective is to arrange these elements so that each unique color and shape appears only once per row and column. It's designed as an engaging brain exercise for players of all ages.

Highlights
  • Color and shape-based gameplay
  • Logic puzzle mechanics
  • Single-player brain game
  • Suitable for all ages
  • Intuitive interface
Features
Read full description

Almost everyone knows it and has certainly played it before. Sudoku is a logic game that is usually played on paper and with the numbers 1 to 9. Coldoku, on the other hand, is a great variation of the classic Sudoku. The main difference is that colors and shapes are used instead of numbers. The aim of Coldoku is to place the playing cards in such a way that each color and shape appears only once in all rows and columns. Coldoku is a brain game for children, teenagers and adults.

Screenshots

Pi Digits4 screens
Coldoku4 screens

Verdict

The call

Pi Digits and Coldoku are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Pi Digits ships an update monthly, Coldoku every 6 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

ScorecardNo meaningful differences
Pi Digits versus Coldoku: the parameters behind the verdict, then further details
ParameterPi DigitsColdoku
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1 — better—
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad — better
Requires iOS17.016.0 — better
Further details — not scored
Size11 MB13 MB
Age rating4+4+
DeveloperSlavka PolanovaMartin Rosenthal

Customer experience

Pi Digits

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Coldoku

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pi Digits

No in-app purchases

None

Coldoku

No in-app purchases

Questions

Is Pi Digits free?
Pi Digits is free to download, with no in-app purchases.
Is Coldoku free?
Coldoku is free to download, with no in-app purchases.
Do Pi Digits or Coldoku have ads?
Neither Pi Digits nor Coldoku shows ads.
Which is updated more often, Pi Digits or Coldoku?
Pi Digits ships an update monthly, and Coldoku every 6 weeks. Most recently, Pi Digits was updated on October 27, 2026 and Coldoku on October 30, 2026.

Other comparisons