# SunFounder Controller vs ST Robotics

The clearest difference is device support: SunFounder Controller at 3 against ST Robotics's 1. SunFounder Controller also leads on iOS requirement (11.0 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 11, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | SunFounder Controller | ST Robotics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (28 ratings)](https://appshunter.io/ios/app/sunfounder-controller/id1538719422/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 94.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 92 MB | 34 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Maker Stars Technology Co., Ltd.](https://appshunter.io/developer/1422345349) | [STMicroelectronics International N.V.](https://appshunter.io/developer/1801774735) |

## What reviewers say

### SunFounder Controller

[App page](https://appshunter.io/ios/app/sunfounder-controller/id1538719422)

This app acts as a virtual remote control for robot kits powered by ESP32 and Raspberry Pi. It offers customizable controls like radar ranging, tracking, sliders, buttons, and arrow keys for interactive robot operation.

**Highlights:** Virtual remote control, ESP32 and Raspberry Pi compatibility, Radar ranging control, Three-channel tracking, Customizable control layout, Sliders, buttons, and arrow keys

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Great app
- 👍 Useful
- 👍 Good functionality
- 👍 Powerful features

**What reviewers complain about**

- 🐛 Needs to be more stable
- 🐛 Needs to be more user-friendly
- 🐛 Disconnects and won't reconnect without reinstallation
- 🐛 Link button off-screen on iPhone XS Max

**Reported bugs**

- App disconnects and requires reinstallation to reconnect
- Link button is off-screen on iPhone XS Max

**Requested features**

- Add a list-box or radio-button widget class
- More warm functions


### ST Robotics

[App page](https://appshunter.io/ios/app/st-robotics/id6739212512)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SunFounder Controller free?

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

### Is ST Robotics free?

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

### Do SunFounder Controller or ST Robotics have ads?

Neither SunFounder Controller nor ST Robotics shows ads.

### Which is updated more often, SunFounder Controller or ST Robotics?

SunFounder Controller ships an update every 3 months, and ST Robotics every 3 months. Most recently, SunFounder Controller was updated on September 11, 2026 and ST Robotics on May 16, 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.*