# Retro N vs Tech25

The clearest difference is in-app purchases: Tech25 at none against Retro N's 4. Tech25 also leads on ads (none vs shown). Retro N's advantage is update cadence (every 8 months vs every 19 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Retro N sells 4 one-off in-app purchases. Tech25 asks for nothing beyond the download.

Retro N ships an update every 8 months, Tech25 every 19 months. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Retro N | Tech25 |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 months** | Every 19 months |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 15 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TELULU LLC](https://appshunter.io/developer/1160120513) | [25 Carrick Ave Project](https://appshunter.io/developer/1605797497) |

## 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 |


### Tech25

[App page](https://appshunter.io/ios/app/tech25/id1605797345)

**In-app purchases:** none


## Frequently asked questions

### Is Retro N free?

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

### Is Tech25 free?

Tech25 is free to download, with no in-app purchases.

### Do Retro N or Tech25 have ads?

Retro N shows ads; Tech25 does not.

### Which is updated more often, Retro N or Tech25?

Retro N ships an update every 8 months, and Tech25 every 19 months. Most recently, Retro N was updated on September 29, 2026 and Tech25 on October 9, 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.*