# Four Memory vs Nuddle

The clearest difference is review sentiment: Four Memory at 100% against Nuddle's 43%. Four Memory also leads on in-app purchases (none vs 3) and iOS requirement (9.0 vs 13.0). Nuddle's advantage is price (Free vs $0.99). On update cadence, ads and device support there is nothing between them.

Nuddle is free to download; Four Memory costs $0.99 up front. Nuddle sells 3 in-app purchases, starting at $4.99 per month. Four Memory asks for nothing beyond the download.

Four Memory ships an update every 5 days, Nuddle weekly. The most recent releases landed on June 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Four Memory | Nuddle |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.9 (8 ratings)](https://appshunter.io/ios/app/nuddle-number-sequences/id1643422440/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | **100.0% of reviews** | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 233 MB | 42 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dreamstate Studios](https://appshunter.io/developer/1360612296) | [SCHMUT WEISS GmbH](https://appshunter.io/developer/1529893097) |

## What reviewers say

### Four Memory

[App page](https://appshunter.io/ios/app/four-memory/id1540217692)

This game offers an infinite memory training experience with four distinct difficulty levels. Players must recall and tap characters in the correct sequence as they appear. It's designed to be engaging for both children and adults.

**Highlights:** Infinite memory training, Four difficulty levels, Character sequence recall, Engaging for all ages, Simple tap controls

**Features:** macOS Compatibility

**In-app purchases:** none


### Nuddle

[App page](https://appshunter.io/ios/app/nuddle-number-sequences/id1643422440)

Engage your mind with daily number sequence puzzles. Discover the underlying system to find the missing digits and build your solving streak. Enjoy unlimited random puzzles and share challenges with friends.

**Highlights:** Daily global number puzzles, Infinite random sequences, Streak building system, Local puzzle caching, Share puzzles with friends, Recognize number systems

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nuddle Plus Monthly | $4.99 | per month |
| Nuddle Plus Yearly | $14.99 | per year |
| Remove ads | $12.99 | one-time |


## Frequently asked questions

### Is Four Memory free?

Four Memory costs $0.99, with no in-app purchases.

### Is Nuddle free?

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

### Do Four Memory or Nuddle have ads?

Neither Four Memory nor Nuddle shows ads.

### Which is updated more often, Four Memory or Nuddle?

Four Memory ships an update every 5 days, and Nuddle weekly. Most recently, Four Memory was updated on June 10, 2026 and Nuddle on October 25, 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.*