# Retro N-Back - Memory Rangers — Fun & Easy Brain Training Game

> Retro N-Back game for cognitive enhancement, memory, and focus improvement. (iPhone/iPad app by TELULU LLC.)

- Source: https://appshunter.io/ios/app/retro-n-back-memory-rangers/id1160120514 (this page in markdown: same URL + `.md`)
- Developer: [TELULU LLC](https://appshunter.io/developer/1160120513)
- Category: Education, Games, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 74 MB
- Languages: American English, Japanese
- Released: 2016-10-06
- Data updated: 2026-08-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/retro-n-back-memory-rangers/id1160120514/reviews.md

## What is Retro N?

Retro-style 8-bit brain training that makes N-back fun. Improve memory, focus, and emotional control while playing. “Level 10 is insane!” A surprisingly deep N-back challenge that kids and adults can enjoy for free.


【What Makes This App Different】
・The only N-back app themed with Retro Game × Superhero Rangers
・All 15 stages completely free (optional tip only)
・Up to 3 players on one device (great for kids, siblings, parents)
・No login, no email, no personal data collected
・Minimal ads, safe for children
・Simple controls anyone can learn instantly


【Player Reviews】
・“Hard even for adults until you get used to it. The retro RPG-style intro feels exciting.”
・“Surprisingly challenging, but you can feel it working. Finding the rhythm is fun.”
・“I almost gave up at Level 6, but finally cleared it after sticking with it.”


【Does Any of This Sound Familiar?】
・You forget things more easily
・You struggle to stay focused
・You get irritated without meaning to
・Your thinking feels slower
・You want your smartphone time to be more meaningful

This app turns the scientifically studied N-back task into a retro game you can naturally keep playing.


【Recommended For】
・Anyone who wants to improve emotional control
・People seeking better focus and memory
・Fans of nostalgic retro games
・Those who struggled with other training methods
・Anyone wanting stress relief
・Parents looking for an educational game for kids


【What Is the N-Back Task?】
Introduced by Kirchner in 1958, the N-back method strengthens working memory by recalling information from “N steps earlier” while making quick decisions.

Abilities expected to improve include:
・Memory
・Focus and sustained attention
・Judgment
・Emotional regulation

Working memory is the mental “workbench” essential for learning, productivity, and daily life.


【Training Design of Memory Rangers】
・Level 1 starts with remembering one step back (beginner-friendly)
・Difficulty gradually increases across 15 stages
・Level 10 is famously tough for those seeking a challenge
・Retro RPG-style presentation keeps the journey engaging

Simple to play, yet you will feel real cognitive challenge as you progress.


【Fun for Families】
One device supports up to 3 profiles, allowing:

・Siblings to compete
・Parents and children to challenge each other
・Friends to enjoy the training together


【Message from the Developer】
N-back is effective but mentally demanding, and many people struggle to keep it going. Still, I believed there were people who wanted to improve emotional balance, focus, and daily well-being.

I wanted to create an experience where
“you were enjoying a game… and before you knew it, your brain had improved.”

That is why I combined the excitement of superhero teams with the warmth of retro games, creating a training method anyone—kids or adults—can continue without stress.

If this app brings even a little more calm, focus, or happiness to your daily life, nothing would make me happier.

Start your retro brain-training journey today.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/retro-n-back-memory-rangers/id1160120514/reviews.md

### 5/5 — 楽しんでワーキングメモリが広げられます。

*2025-07-24*

かわいい😍から毎日続けるのが楽しいです。

**Developer response:** 大変嬉しいコメントどうもありがとうございます😭😭

### 5/5 — いいね

*2019-10-27*

これは面白い
意外と難しいけど脳に効いてる(？)感じがしてきた👍👍
コツを掴むと楽しい。コツを掴むのが楽しい。
レベル10までしかないのが残念。
もっと難しいとこまでいける気がしてしまう、限界までやってみたいと思うようなゲームだから、無限バージョンとか作って全国ランキングとかつくるともっとやる気でると思います！
是非お願いしたい！😍

**Developer response:** まかろにいいいｗｗｗ^さん
大変うれしいコメントを頂きまして、どうもありがとうございます！
ご要望頂いた機能については、前向きに検討させて頂きたいと思います。

## Frequently asked questions about Retro N

### What is Retro N-Back?

Retro N-Back is a brain training game designed to improve memory, focus, and emotional control using the scientifically studied N-back task. It features a retro 8-bit aesthetic with a superhero theme.

### How does Retro N-Back improve cognitive skills?

The app utilizes the N-back task, which strengthens working memory by requiring players to recall information from 'N steps earlier.' This process is expected to enhance memory, focus, judgment, and emotional regulation.

### Is Retro N-Back free to play?

Yes, Retro N-Back is free to play with all 15 stages available at no cost. There are optional in-app purchases, and the app contains minimal advertisements.

### Can multiple people play Retro N-Back on one device?

Yes, Retro N-Back supports up to 3 player profiles on a single device. This allows siblings, parents and children, or friends to compete and train together.

### Does Retro N-Back collect personal data?

No, Retro N-Back does not require any login, email, or personal data collection. It is designed to be a private and safe experience for users.

### Is Retro N-Back suitable for children?

Yes, Retro N-Back is rated for ages 4+ and is described as safe for children with minimal ads. Parents are looking for an educational game for kids.

### How often is Retro N-Back updated?

The latest version is 4.0.0, released on December 7, 2025. While specific update frequency isn't detailed, the app is actively maintained.

### What is the user sentiment for Retro N-Back?

The app has a perfect 5.0-star rating from 1 review, indicating very positive initial user sentiment. Reviewers mention it's challenging but rewarding and fun.

## Version history (last 5 releases)

### 4.0.0 — 2025-12-07

■ Updated libraries to ensure compatibility with the latest devices.
■ Refreshed the store listing to better showcase the app’s features.
■ Made minor UI improvements.

### 3.1.0 — 2024-10-18

- Minor UI updates for a better experience.

### 3.0.2 — 2024-08-29

Updated the link to the developer website. (There are no changes to the app itself.)
Get ready for a whole new 'Memory Rangers' experience! Version 3.0.0 brings a major overhaul after five years.

### 3.0.1 — 2024-08-28

Minor updates to the app listing (no changes to the app itself).

Version 3.0.0 is a major overhaul after 5 years!

・Now available in English!
・Enjoy 50% more stages with a smoother difficulty curve.
・Enhanced button feel for a more comfortable experience.
・In-app purchases to remove ads and support the developer. 
(All features are free to use without in-app purchases.)

### 3.0.0 — 2024-08-27

We’ve undergone a major renewal after 5 years! Please enjoy the evolved 'Memory Rangers!'
・Released a new English version.
・Increased the number of stages by 1.5 times (from 10 to 15).
・Revised the difficulty progression for more gradual level-up.
・Improved button responsiveness for a smoother user experience.
・Added an in-app purchase option to remove ads.
・Added an in-app purchase option for tipping and supporting the developer. If you find this app helpful, your support would be greatly appreciated!
(All features of this app are fully available for free without any purchases.)

## Apps similar to Retro N

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Turtle Time - Picture Memory](https://appshunter.io/ios/app/turtle-time-picture-memory/id1213421183) | — | Free | Education |
| [Number Track - Memory Trainer](https://appshunter.io/ios/app/number-track-memory-trainer/id1208566780) | — | Free | Education |
| [Dual N-Back ADHD Focus Game](https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504) | 4.3 (19) | Free | Education |
| [Memory Daily](https://appshunter.io/ios/app/memory-daily/id1517334632) | 5.0 (2) | Free | Education |
| [Number Blast - Memory Trainer](https://appshunter.io/ios/app/number-blast-memory-trainer/id1208566898) | — | Free | Education |
| [Brain Training with Numbers](https://appshunter.io/ios/app/brain-training-with-numbers/id1516096715) | 5.0 (1) | Free | Education |

## More apps by TELULU LLC

- [高速読み上げフラッシュカードで語彙トレ・ゴイコイコイ](https://appshunter.io/ios/app/id1179752374)
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- [小学生からの英検®単語 ３・４・５級編](https://appshunter.io/ios/app/id1474190743)
- [GAMBO: 17s/68s Manifesting](https://appshunter.io/ios/app/gambo-17s68s-manifesting/id6468561440)
- [小学生からの英検®単語 ２級・準２級編](https://appshunter.io/ios/app/id6730112960)

All apps by TELULU LLC: https://appshunter.io/developer/1160120513

## Related topics

[memories back](https://appshunter.io/ios/topics/memories-back)

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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 2026-08-20.*