NumMemorize vs NumAndShape
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NumMemorize
This app helps users memorize digits of mathematical constants like pi and e through quizzes. It also allows users to input and memorize their own custom numbers, and offers voice input for convenience.
- Memorize digits of pi, e, and other constants
- Quiz yourself on number recall
- Input and memorize custom numbers
- Voice input for number entry
- Practice for math and science students
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NumMemorize quizzes you on the digits of well-known constants (such as π, e, √2), and will help you memorize additional digits. This app is a must-have for math and science students, and those wishing to impress teachers, friends and family, or fellow nerds! What party won't be livened up with a 20 digit recall of ϕ (the Golden ratio)? Imagine walking up to the blackboard and writing out √2 to 30, 40, or more digits! Say you're being hustled at a game of pool. Easy, bet your opponent, double or nothing, that you can recount pi to 30, no, even better, 50 digits. Let those other kids fill their heads with useless sports stats. These numbers are timeless and universal! Who knows who you'll impress - armed with this knowledge, you'll probably marry a smarter and better looking spouse, have a better job and live happily ever after! NEW! Now enter your own numbers! You can enter any numbers you'd like: drivers license, card numbers, phone numbers and your own favorite constants and values. Go ahead, enter 99! NEW! You can now just speak your number instead of tapping it in! NumMemorize makes it easy to memorize any number! (99! is 933262154439441526816992388562667004907159682643816214685929638952175999932299156089414639761565182862536979208272237582511852109168640000000000000000000000)
NumAndShape
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free content - addition - subtraction - multiplication - division - average - summation - area of triangle - area of circle paid content - prime number - power - per hour - binary number - sin cos tan NumAndShape Unlimited - Available including current paid content and paid content that will be added later - Hide advertisements
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Verdict
The clearest difference is in-app purchases: NumMemorize at none against NumAndShape's 6. NumMemorize also leads on ads (none vs shown) and iOS requirement (9.0 vs 16.6). On price, update cadence 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
Both are free to download. NumAndShape sells 6 one-off in-app purchases. NumMemorize asks for nothing beyond the download.
NumMemorize ships an update every 4 months, NumAndShape every 2 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | NumMemorize | NumAndShape |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Mahboud Zabetian | ken morobayashi |
In-app purchases
NumMemorize
No in-app purchases
NumAndShape
- prime number$0.49
- power$0.49
- per hour$0.49
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- binary number$0.49
- sin cos tan$0.49
- NumAndShape Unlimited$1.99
Questions
Is NumMemorize free?
Is NumAndShape free?
Do NumMemorize or NumAndShape have ads?
Which is updated more often, NumMemorize or NumAndShape?
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