# Number Memory 25 vs N'Back Fan

The clearest difference is price: N'Back Fan at Free against Number Memory 25's $0.99. Number Memory 25's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 9 months). On in-app purchases, device support and iOS requirement there is nothing between them.

N'Back Fan is free to download; Number Memory 25 costs $0.99 up front. Number Memory 25 sells 1 one-off in-app purchase and N'Back Fan sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Number Memory 25 ships an update every 3 weeks, N'Back Fan every 9 months. The most recent releases landed on September 2, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Number Memory 25 | N'Back Fan |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/number-memory-25/id6448686063/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Paid | — |
| Size | 3 MB | 7 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [T&T United Inc.](https://appshunter.io/developer/468282934) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### Number Memory 25

[App page](https://appshunter.io/ios/app/number-memory-25/id6448686063)

This brain training app helps improve memory by challenging users to memorize and recall sequences of numbers. Regular, short practice sessions can enhance visual memory and cognitive skills.

**Highlights:** Memorize and recall number sequences, Visual memory training, Daily 30-second practice, Progressive difficulty, Simple, challenging gameplay

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | Free | one-time |


### N'Back Fan

[App page](https://appshunter.io/ios/app/nback-fan/id6449070102)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove ads and extend to 12 | $1.99 | one-time |


## Frequently asked questions

### Is Number Memory 25 free?

Number Memory 25 costs $0.99, and also offers in-app purchases.

### Is N'Back Fan free?

N'Back Fan is free to download, with in-app purchases available.

### Do Number Memory 25 or N'Back Fan have ads?

N'Back Fan shows ads; Number Memory 25 does not.

### Which is updated more often, Number Memory 25 or N'Back Fan?

Number Memory 25 ships an update every 3 weeks, and N'Back Fan every 9 months. Most recently, Number Memory 25 was updated on September 2, 2026 and N'Back Fan on September 10, 2026.

---

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