# Dual N vs MindBuilding

The clearest difference is ads: MindBuilding at none against Dual N's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Dual N sells 1 one-off in-app purchase and MindBuilding sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Dual N ships an update every 5 days, MindBuilding weekly. The most recent releases landed on October 31, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Dual N | MindBuilding |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Size | 13 MB | 85 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takanori Horitsu](https://appshunter.io/developer/1896386009) | [ROMEO ILARIO FLAVIO GAMBINO](https://appshunter.io/developer/1874823696) |

## What reviewers say

### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-brain-trainer/id6767109556)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free | $0.99 | one-time |


### MindBuilding

[App page](https://appshunter.io/ios/app/mindbuilding-brain-training/id6815573171)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MindBuilding Pro — Weekly | $4.99 | per 7 days |
| MindBuilding Pro — Yearly | $29.99 | per year |
| MindBuilding Pro — Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Dual N free?

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

### Is MindBuilding free?

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

### Do Dual N or MindBuilding have ads?

Dual N shows ads; MindBuilding does not.

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

Dual N ships an update every 5 days, and MindBuilding weekly. Most recently, Dual N was updated on October 31, 2026 and MindBuilding on November 7, 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.*