# French memory castle vs Memorize Fast

The clearest difference is in-app purchases: French memory castle at none against Memorize Fast's 1. French memory castle also leads on iOS requirement (13.4 vs 15.0). Memorize Fast's advantage is update cadence (every 9 days vs every 13 months). On price, ads and device support there is nothing between them.

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

French memory castle ships an update every 13 months, Memorize Fast every 9 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | French memory castle | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 45 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fanousoft, LLC](https://appshunter.io/developer/1721279190) | [Yevhen Murzik](https://appshunter.io/developer/1533055951) |

## What reviewers say

### French memory castle

[App page](https://appshunter.io/ios/app/french-memory-castle/id6502218535)

**Features:** macOS Compatibility, Vision Pro support

**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 French memory castle free?

French memory castle is free to download, with no in-app purchases.

### Is Memorize Fast free?

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

### Do French memory castle or Memorize Fast have ads?

Neither French memory castle nor Memorize Fast shows ads.

### Which is updated more often, French memory castle or Memorize Fast?

French memory castle ships an update every 13 months, and Memorize Fast every 9 days. Most recently, French memory castle was updated on October 25, 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.*