# NBack: Boost IQ — Train Focus, Brain & Recall

> Scientifically proven cognitive training app to boost IQ and fluid intelligence. (iPhone/iPad app by eric cesar.)

- Source: https://appshunter.io/ios/app/nback-boost-iq/id6743346501 (this page in markdown: same URL + `.md`)
- Developer: [eric cesar](https://appshunter.io/developer/1783301800)
- Category: Health & Fitness, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 44 MB
- Languages: American English
- Released: 2025-04-19
- Data updated: 2026-06-01
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/nback-boost-iq/id6743346501/reviews.md

## What is NBack?

The N-Back Challenge isn’t just a game.
 
It’s a scientifically validated cognitive upgrade —
 engineered to boost your IQ in just 7 hours total.
Built on Research. 
Designed for Results.
 Forget brain-training fluff.
 
This is dual n-back — the only method proven to actually increase fluid intelligence, with results published in New York Times, The Wall Street Journal and other top journals.

But here’s the truth:
 It’s brutal. It’s exhausting. It works.


If you can complete 20 sessions, you may unlock:
 
• Sharper memory
 
• Faster learning
 
• Enhanced problem-solving
 
• Stronger focus under pressure


Track your progress.
 
See real gains — backed by data.
 

All within a beautifully designed, customizable experience.
This is not for everyone.
 But if you’re hungry to evolve,
The Challenge awaits.


This app is only available in English.

Privacy Policy: https://boostiq.app/privacypolicy.html 
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Scientifically validated cognitive training
- Dual n-back method for fluid intelligence
- Boosts memory and focus
- Enhances problem-solving skills
- Progress tracking with data-backed gains
- Customizable user experience

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly membership | $14.99 | per year |
| Monthly membership | $1.99 | per month |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/nback-boost-iq/id6743346501/reviews.md

### 5/5 — Développement

*2025-04-24, version 1.0.1*

Depuis que j’ai installé NBack je me sens plus concentrée et je vois des évolutions dans mon quotidien. Bel appli simple et efficace !

### 5/5 — ADDICTIF

*2025-04-24, version 1.0.1*

Jeu simple et complexe à la fois qui demande de la concentration. C’est vraiment le type de challenge que j’apprécie pour travailler ma mémoire 🥰

## Frequently asked questions about NBack

### What is NBack and how does it work?

NBack utilizes the dual n-back method, a scientifically validated cognitive exercise designed to improve fluid intelligence. It challenges your working memory by requiring you to track both visual and auditory stimuli simultaneously.

### What are the benefits of using NBack?

Consistent use of NBack has been shown to lead to a sharper memory, faster learning, enhanced problem-solving abilities, and stronger focus under pressure, potentially increasing your fluid intelligence.

### Is NBack suitable for everyone?

The app description states that NBack is 'brutal' and 'exhausting,' suggesting it is designed for users who are highly motivated and committed to rigorous mental training. It is only available in English.

### How much does NBack cost?

NBack is free to download and use. It offers optional monthly ($1.99/P1M) and yearly ($14.99/P1Y) memberships for enhanced features or content.

### What devices does NBack support?

NBack is available for iPhone, iPad, and iPod devices, indicated by its compatibility with iOS.

### How often is NBack updated?

The latest version of NBack is 1.0.3, and it was last updated on January 9, 2026. This indicates a relatively recent update, suggesting ongoing development and support.

### Does NBack have ads?

No, NBack does not contain advertisements. Its monetization model relies on optional in-app purchases for membership plans.

### What is the age rating for NBack?

NBack has an age rating of 4+, making it suitable for a wide range of users, including children and adults, though the challenging nature of the training may appeal more to older users.

## Version history (last 4 releases)

### 1.0.3 — 2026-01-09

Performances improvement

### 1.0.2 — 2025-11-05

Bugs fixes and UI improvement

### 1.0.1 — 2025-04-23

New features : Onboarding and How to play section, total time and max-nback data added on leaderboard.

### 1.0 — 2025-04-19

No release notes.

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## More apps by eric cesar

- [CookAI: Photo to Recipe Maker](https://appshunter.io/ios/app/cookai-photo-to-recipe-maker/id6745277023)
- [Try-on app AI : OOTD](https://appshunter.io/ios/app/try-on-app-ai-ootd/id6746451600)

All apps by eric cesar: https://appshunter.io/developer/1783301800

## Related topics

[recall boost](https://appshunter.io/ios/topics/recall-boost)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*