Comparison

3.14 Master Pi vs Pi Deliberate

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

Head to head
About

3.14 Master Pi

Features
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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: β€’ Learn and memorize Pi by practicing digits in chunks and unlocking new levels. β€’ Speed challenges let you race against time to recall as many digits as you can. β€’ Real-world examples, like the Pizza Value Challenge, show how Pi applies to life. β€’ Track progress with accuracy, streak, and milestone stats. β€’ Customize your theme colors and keypad layout for a personal experience. β€’ 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.

About

Pi Deliberate

This app uses memorizing digits of pi to train expertise through deliberate practice. It provides a valid environment, repetitions, and timely feedback to foster recognition, memory, and intuition.

Highlights
  • Memorize digits of pi
  • Deliberate practice training
  • Timely feedback on accuracy
  • Track progress based on mastery
  • Learn using chunking method
  • Develop recognition and memory
Features
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How do real experts develop extraordinary ability? Research shows that expertise emerges when four conditions are met: a valid environment, many repetitions, timely feedback, and deliberate practice. Pi Deliberate is designed to satisfy all four conditions using one of the simplest and cleanest problems possible: memorizing the digits of pi (3.141592...). This is not about tricks or talent. It is about training recognition, memory, and intuition the way experts actually do. WHY PI? The digits of pi create an ideal training environment: - Infinite depth: there is always more to learn - Clear right or wrong: no ambiguity - Consistent structure: repeated exposure to the same patterns - No shortcuts: improvement reflects real learning Unlike many skills, pi provides a high-validity environment where your progress directly reflects how much you have learned. THE FOUR CONDITIONS OF EXPERTISE Valid Environment A stable, rule-based domain with real patterns to discover. Many Repetitions Focused, repeated attempts that build long-term memory. Timely Feedback Immediate correction after every digit you enter. Deliberate Practice Sessions designed to keep you just beyond your comfort zone, where real learning happens. HOW YOU PRACTICE - Learn digits using chunking rather than rote memorization - Receive instant feedback on accuracy - Track progress based on mastery, not streaks - Train intuition by recognizing patterns The goal is not just remembering more digits. It is understanding how expertise forms. WHO THIS IS FOR - Learners curious about how experts are made - Students, engineers, and scientists - People interested in cognitive science and deliberate practice - Anyone who values depth over gimmicks NOT A GAME No randomness. No shortcuts. No artificial rewards. Just a valid environment, repeated effort, timely feedback, and deliberate practice. Inspired by research on expertise development and the Veritasium video "The 4 things it takes to be an expert" by Derek Muller. Train how experts are made. One digit at a time.

Screenshots

3.14 Master Pi4 screens
Pi Deliberate4 screens

Verdict

The call

The clearest difference is in-app purchases: Pi Deliberate at none against 3.14 Master Pi's 5. On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

Scorecard1 real difference Β· 6 level
3.14 Master Pi versus Pi Deliberate: the parameters behind the verdict, then further details
Parameter3.14 Master PiPi Deliberate
PriceFreeFree
Update frequencyEvery 2 monthsβ€”
AdsNoNo
In-app purchasesYesNo β€” better
Monetizationβ€”Free
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS15.115.1
Further details β€” not scored
Size47 MB25 MB
Age rating4+4+
DeveloperDavid BrownByeongsoo Kim

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
None

Pi Deliberate

No in-app purchases

Questions

Is 3.14 Master Pi free?
3.14 Master Pi is free to download, with in-app purchases available.
Is Pi Deliberate free?
Pi Deliberate is free to download, with no in-app purchases.
Do 3.14 Master Pi or Pi Deliberate have ads?
Neither 3.14 Master Pi nor Pi Deliberate shows ads.

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