# BitBitCS vs Memorize Fast

The clearest difference is iOS requirement: BitBitCS at 13.0 against Memorize Fast's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. BitBitCS sells 1 in-app purchase, starting at $4.99 per month and Memorize Fast sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

BitBitCS ships an update every 8 days, Memorize Fast every 9 days. The most recent releases landed on September 16, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | BitBitCS | Memorize Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/memorize-fast-nummnemonic/id6757535911/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 45 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LIN SUN](https://appshunter.io/developer/1764594272) | [Yevhen Murzik](https://appshunter.io/developer/1533055951) |

## What reviewers say

### BitBitCS

[App page](https://appshunter.io/ios/app/bitbitcs/id6661013090)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |


### 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 BitBitCS free?

BitBitCS is free to download, with in-app purchases available.

### Is Memorize Fast free?

Memorize Fast is free to download, with in-app purchases available.

### Do BitBitCS or Memorize Fast have ads?

Neither BitBitCS nor Memorize Fast shows ads.

### Which is updated more often, BitBitCS or Memorize Fast?

BitBitCS ships an update every 8 days, and Memorize Fast every 9 days. Most recently, BitBitCS was updated on September 16, 2026 and Memorize Fast on September 29, 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.*