# Dual N vs SAPPERoNE

The clearest difference is in-app purchases: SAPPERoNE at none against Dual N's 2. SAPPERoNE also leads on ads (none vs shown). Dual N's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price there is nothing between them.

Both are free to download. Dual N sells 2 in-app purchases, starting at $0.99 per month. SAPPERoNE asks for nothing beyond the download.

## The numbers

| Metric | Dual N | SAPPERoNE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (376 ratings)](https://appshunter.io/ios/app/dual-n-back-brain-training/id1578693948/reviews)** | — |
| Number of ratings | **376** | — |
| Positive reviews | 50.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 199 MB | 1 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GOKAKU SUPPLI, LIMITED LIABILITY CO.](https://appshunter.io/developer/1440310107) | [Anwar Umar](https://appshunter.io/developer/1760586419) |

## What reviewers say

### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-brain-training/id1578693948)

This app is a brain game designed to improve working memory and cognitive skills through a challenging memory-training exercise. It offers customizable difficulty, goal setting, and global leaderboards to track progress. An ad-free experience is available via a subscription.

**Highlights:** Working memory training, Customizable difficulty (N-value, interval, session length), Goal setting and reminders, Global leaderboards, Multilingual support, Ad-free Pro version

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NBack Monthly Subscription | $0.99 | per month |
| Lifetime Pass | $12.99 | one-time |


### SAPPERoNE

[App page](https://appshunter.io/ios/app/sapperone/id6795354750)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dual N free?

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

### Is SAPPERoNE free?

SAPPERoNE is free to download, with no in-app purchases.

### Do Dual N or SAPPERoNE have ads?

Dual N shows ads; SAPPERoNE does not.

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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.*