Comparison

NumMemorize vs Memorize Fast

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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)

About

Memorize Fast

This app uses mnemonic techniques to help you memorize numbers like phone numbers, PINs, and passcodes. It transforms digits into vivid images for natural recall, requiring minimal daily practice. Unlock advanced features with custom mappings.

Highlights
  • Memorize phone numbers and passcodes
  • Remember long number sequences
  • Learn Major and PAO systems
  • Improve recall accuracy
  • Daily practice under a minute
  • Create custom number mappings (Pro)
Features
Read full description

Stop forgetting numbers you actually need. NumMnemonic helps you memorize phone numbers, PINs, passcodes and long number sequences using proven mnemonic techniques. Instead of drilling digits repeatedly, you turn numbers into vivid images your brain remembers naturally. With NumMnemonic you can: • Memorize phone numbers and passcodes • Remember long number sequences • Learn Major and PAO systems • Improve recall accuracy • Practice daily in under a minute • Create custom number mappings (Pro) Built for practical everyday use. No ads. No noise. Just better number memory.

Screenshots

NumMemorize4 screens
Memorize Fast4 screens

Verdict

The call

The clearest difference is in-app purchases: NumMemorize at none against Memorize Fast's 1. NumMemorize also leads on iOS requirement (9.0 vs 15.0). Memorize Fast's advantage is update cadence (every 9 days vs every 4 months). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Memorize Fast sells 1 one-off in-app purchase. NumMemorize asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for NumMemorize against 5.0 for Memorize Fast. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

NumMemorize ships an update every 4 months, Memorize Fast every 9 days. The most recent releases landed on September 28, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
NumMemorize versus Memorize Fast: the parameters behind the verdict, then further details
ParameterNumMemorizeMemorize Fast
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings12 — better
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size3 MB45 MB
Age rating4+4+
DeveloperMahboud ZabetianYevhen Murzik

Customer experience

NumMemorize

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Memorize Fast

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

NumMemorize

No in-app purchases

1 purchases

Memorize Fast

One-time1
  • Lifetime Pro Access$4.99

Questions

Is NumMemorize free?
NumMemorize is free to download, with no in-app purchases.
Is Memorize Fast free?
Memorize Fast is free to download, with in-app purchases available.
Which has better reviews, NumMemorize or Memorize Fast?
NumMemorize and Memorize Fast are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do NumMemorize or Memorize Fast have ads?
Neither NumMemorize nor Memorize Fast shows ads.
Which is updated more often, NumMemorize or Memorize Fast?
NumMemorize ships an update every 4 months, and Memorize Fast every 9 days. Most recently, NumMemorize was updated on September 28, 2026 and Memorize Fast on October 15, 2026.

Other comparisons