# Dual N vs MonkeyDo

The clearest difference is review sentiment: MonkeyDo at 100% against Dual N's 50%. Dual N's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Dual N sells 2 in-app purchases, starting at $0.99 per month and MonkeyDo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Dual N ships an update fortnightly, MonkeyDo weekly. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Dual N | MonkeyDo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (335 ratings)](https://appshunter.io/ios/app/dual-n-back-brain-training/id1578693948/reviews)** | — |
| Number of ratings | **335** | — |
| Positive reviews | 50.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 191 MB | 13 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GOKAKU SUPPLI, LIMITED LIABILITY CO.](https://appshunter.io/developer/1440310107) | [Juan Sebastian Estrada Tun](https://appshunter.io/developer/1769506425) |

## 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 |


### MonkeyDo

[App page](https://appshunter.io/ios/app/monkeydo-brain-challenge/id6739574321)

Test your memory and reaction time by memorizing number sequences on a grid and tapping them in order. This addictive puzzle game challenges you to outperform primates with its progressive difficulty and quick gameplay sessions.

**Highlights:** Memorize number positions, Tap numbers in sequence, Progressive difficulty, Quick gameplay sessions, Challenge against primate memory

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Free Version | $2.99 | one-time |


## Frequently asked questions

### Is Dual N free?

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

### Is MonkeyDo free?

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

### Do Dual N or MonkeyDo have ads?

Both Dual N and MonkeyDo show ads.

### Which is updated more often, Dual N or MonkeyDo?

Dual N ships an update fortnightly, and MonkeyDo weekly. Most recently, Dual N was updated on September 26, 2026 and MonkeyDo on September 10, 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.*