# Retro N vs NBack³

The clearest difference is update cadence: NBack³ at every 4 days against Retro N's every 8 months. Retro N's advantage is review sentiment (100% vs 71%) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Retro N sells 4 one-off in-app purchases and NBack³ sells 1 in-app purchase, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Retro N ships an update every 8 months, NBack³ every 4 days. The most recent releases landed on September 10, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Retro N | NBack³ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/retro-n-back-memory-rangers/id1160120514/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 74 MB | 20 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TELULU LLC](https://appshunter.io/developer/1160120513) | [Taiki Nishimura](https://appshunter.io/developer/1780302048) |

## What reviewers say

### Retro N

[App page](https://appshunter.io/ios/app/retro-n-back-memory-rangers/id1160120514)

Engage in retro-style brain training that makes the N-back task enjoyable. Improve memory, focus, and emotional control through a superhero-themed game. Suitable for all ages, it offers a free, ad-supported experience with optional in-app purchases.

**Highlights:** Retro 8-bit N-back gameplay, Improves memory and focus, Superhero Ranger theme, Up to 3 players on one device, No login or personal data collection, Minimal ads, child-safe

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support for this app (100) | $0.49 | one-time |
| Remove Ads | $2.99 | one-time |
| Support for this app (500) | $2.99 | one-time |
| Support for this app (1000) | $5.99 | one-time |


### NBack³

[App page](https://appshunter.io/ios/app/nback-memory-training-game/id6745750227)

This brain training app uses the scientifically proven Dual N-Back method to enhance cognitive functions like working memory, focus, and decision-making. It offers adjustable difficulty levels and tracks progress with a visually engaging interface.

**Highlights:** Dual N-Back method, Adjustable difficulty (n=1-5), Enhances working memory, Improves inhibitory control, Develops attention skills, Progress tracking, Streak bonus system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.49 | per month |


## Frequently asked questions

### Is Retro N free?

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

### Is NBack³ free?

NBack³ is free to download, with in-app purchases available.

### Do Retro N or NBack³ have ads?

Both Retro N and NBack³ show ads.

### Which is updated more often, Retro N or NBack³?

Retro N ships an update every 8 months, and NBack³ every 4 days. Most recently, Retro N was updated on September 10, 2026 and NBack³ on August 14, 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.*