# NumMemorize vs Memorize Fast

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.

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

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.

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.

## The numbers

| Metric | NumMemorize | Memorize Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nummemorize/id310151986/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/memorize-fast-nummnemonic/id6757535911/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 45 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mahboud Zabetian](https://appshunter.io/developer/310151989) | [Yevhen Murzik](https://appshunter.io/developer/1533055951) |

## What reviewers say

### NumMemorize

[App page](https://appshunter.io/ios/app/nummemorize/id310151986)

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:** macOS Compatibility

**In-app purchases:** none


### Memorize Fast

[App page](https://appshunter.io/ios/app/memorize-fast-nummnemonic/id6757535911)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro Access | $4.99 | one-time |


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*