SunFounder Controller vs K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SunFounder Controller
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.
- Virtual remote control
- ESP32 and Raspberry Pi compatibility
- Radar ranging control
- Three-channel tracking
- Customizable control layout
- Sliders, buttons, and arrow keys
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Sunfounder Controller is a virtual remote control APP, used to control ESP32 and Raspberry Pi-based robot kits. The APP integrates controls such as radar ranging, three-channel tracking, sliders, buttons, and arrow keys. Users can customize the arrangement of these controls according to their own preferences.
K
Control a remote-controlled robot to perform various actions like walking, dancing, and stunts. Program custom dance routines using manual or block-based methods for educational and entertainment purposes.
- Remote robot control
- Perform stunts and dance moves
- Manual programming
- Block-based programming
- Program dance routines
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1. Remote-control Interstellar Scout to walk, perform stunts and dance moves, etc. 2. Program dance routines for Interstellar Scout through manual programming and block-based programming. Interstellar Scout is an educational series of products from Robosen, designed to bring a wealth of educational and entertainment content to everyone.
Screenshots
Verdict
The clearest difference is review sentiment: SunFounder Controller at 95% against K's 0%. SunFounder Controller also leads on rating (4.4 vs 2.8) and iOS requirement (11.0 vs 13.0). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SunFounder Controller holds the better App Store score, 4.4 against 2.8. Both are backed by a comparable volume of ratings — 28 and 10 respectively. Written reviews point the same way: 95% of SunFounder Controller's written reviews are positive against 0% of K's.
SunFounder Controller ships an update every 3 months, K every 2 months. The most recent releases landed on September 11, 2026 and June 3, 2026 respectively.
| Parameter | SunFounder Controller | K |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (28 ratings) — better | 2.8 (10 ratings) |
| Positive reviews | 94.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 28 — better | 10 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 92 MB | 181 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Maker Stars Technology Co., Ltd. | Robosen Robotics |
Customer experience
SunFounder Controller
K
Bugs and requests
SunFounder Controller
Reported bugs
2 issues- App disconnects and requires reinstallation to reconnect
- Link button is off-screen on iPhone XS Max
Requested features
2 requests- Add a list-box or radio-button widget class
- More warm functions
K
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SunFounder Controller
No in-app purchases
K
No in-app purchases
