PiMemory vs Numery
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!
Numery
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Your memory isnβt born; itβs built. Numery gives you control over everything you always forget: phone numbers, passwords, birthdays, historical factsβ¦ All using historically proven methods employed by memory geniuses. Reduce your COGNITIVE DECLINE. Counterbalance AI usage. Several scientific studies agree that the more you use your memory, the longer youβll maintain your cognitive abilities intact. Nowadays, we delegate so much cognitive processing to AI that our brains become lazier. And if we donβt act now, by the time we want to reverse the negative effects, it will be too late. What you can do with Numery: β’ Major System β turn numbers into memorable words and mental images, with clear rules. β’ Spaced repetition quizzes β review at just the right times to lock in what youβve learned without overwhelm. β’ My Numbers β save what matters to you β’ Converter and simulator β practice encoding and decoding until it becomes automatic. β’ Challenges β donβt just memorize what you already know, memorize much more. β’ Languages β Numery supports English, Spanish, French and Italian. Privacy as the foundation Your study data never leaves your devices to train models or for third-party analytics. EVERYTHING stays on your devices. Train with peace of mind. Numery is developed by an independent developer. Your feedback and suggestions help shape future updates. If you find the app useful, a rating would mean a lot. If you need technical support, want to send feedback, or just want to say hello, you can email corde.elencato-5y@icloud.com. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.numeryapp.com/privacypolicy
Screenshots
Verdict
The clearest difference is in-app purchases: PiMemory at none against Numery's 3. PiMemory also leads on iOS requirement (16.6 vs 26.0). Numery's advantage is ads (none vs shown) and update cadence (every 2 days vs fortnightly). On price 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. Numery sells 3 in-app purchases, starting at $1.99 per month. PiMemory asks for nothing beyond the download.
PiMemory ships an update fortnightly, Numery every 2 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | PiMemory | Numery |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 days β better |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 16.6 β better | 26.0 |
| Further details β not scored | ||
| Size | 11 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Younghan Kim | David Carlander-Reuterfelt Gallo |
In-app purchases
PiMemory
No in-app purchases
Numery
- Numery Pro mensual$1.991 Month
- Numery Pro β Anual3 Days trial$9.991 Year
- Numery Pro de por vida$34.99









