PiMemory vs pi!
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
PiMemory
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PiMemory is a fun app to learn and memorize the digits of Ο. 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 Ο up to 3,000 decimal places repeatedly. Key Features: - Game Mode: Challenge yourself by matching Ο digits using the numeric keypad (up to 3,000 decimal places) - Learn Mode: Check and practice Ο 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 Ο with PiMemory while improving your focus and memory skills!
pi!
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How many digits of Ο can you memorize? Ο Memorizer helps you learn and recall the digits of pi using a simple, focused approach: see the digits, hide them, type them back. No gimmicks β just effective memorization. LEARN β’ Study digits in customizable chunks of 5, 10, or 20 β’ See the digits, then hide and input them from memory β’ Pick up right where you left off β progress saves automatically β’ Browse all 10,000 digits with your learned positions highlighted β’ Tap any group to jump to that position and start practicing TEST β’ Type digits of Ο from memory as fast as you can β’ Timer starts on your first tap β no pressure until you're ready β’ See your entered digits organized in clean, readable groups β’ Wrong digit? Game over. See exactly where you went wrong and what the correct digit was β’ Beat your personal record and track your improvement STATS β’ Personal best record, learning progress, current streak β’ Average speed (digits per second), total sessions, and practice time β’ Full session history to review past attempts APPLE WATCH β’ Quick-test on the go with a compact numpad β’ Best record syncs with your iPhone via WatchConnectivity DESIGNED FOR APPLE β’ Liquid Glass design language β beautiful on iOS 26, iPadOS, and macOS β’ Apple Pencil Scribble support on iPad β write digits by hand β’ iCloud sync keeps your progress across all your devices β’ Haptic feedback on every tap for a satisfying input experience Whether you're a math enthusiast, a memory athlete, or just curious how far you can go β Ο Memorizer is your companion for the journey from 3.14 to 3.14159265358979323846β¦
Screenshots
Verdict
The clearest difference is ads: pi! at none against PiMemory's shown. PiMemory's advantage is iOS requirement (16.6 vs 26.0). On price, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PiMemory | pi! |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | β |
| Ads | Yes | No β better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch β better |
| Requires iOS | 16.6 β better | 26.0 |
| Further details β not scored | ||
| Size | 11 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Younghan Kim | Sijun Yang |
In-app purchases
PiMemory
No in-app purchases
pi!
No in-app purchases





