# CellRobot vs RetroScreens

The clearest difference is in-app purchases: CellRobot at none against RetroScreens's 1. CellRobot also leads on iOS requirement (9.0 vs 17.0). RetroScreens's advantage is update cadence (every 6 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. RetroScreens sells 1 one-off in-app purchase. CellRobot asks for nothing beyond the download.

CellRobot ships an update every 6 weeks, RetroScreens every 6 days. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CellRobot | RetroScreens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cellrobot/id1129134602/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | Free | — |
| Size | 142 MB | 40 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Beijing KEYi Technology Co., Ltd.](https://appshunter.io/developer/1129134601) | [Dave Davis](https://appshunter.io/developer/1865964958) |

## What reviewers say

### CellRobot

[App page](https://appshunter.io/ios/app/cellrobot/id1129134602)

This application serves as the controller for a custom modular robot system. It enables users to build and program various robot configurations, fostering creativity and engineering knowledge through hands-on exploration. Requires the purchase of the robot hardware to function.

**Highlights:** Control custom modular robots, Build hundreds of robot shapes, Visual script programming, Hands-on engineering exploration, Inspires creativity

**Features:** macOS Compatibility

**In-app purchases:** none


### RetroScreens

[App page](https://appshunter.io/ios/app/retroscreens/id6776288988)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $9.99 | one-time |


## Frequently asked questions

### Is CellRobot free?

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

### Is RetroScreens free?

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

### Do CellRobot or RetroScreens have ads?

Neither CellRobot nor RetroScreens shows ads.

### Which is updated more often, CellRobot or RetroScreens?

CellRobot ships an update every 6 weeks, and RetroScreens every 6 days. Most recently, CellRobot was updated on September 23, 2026 and RetroScreens on October 1, 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.*