WindyTool vs S4C
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
WindyTool
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The WINDY application will allow you to easily connect to your intelligent controller to manage your comfort parameters. Via a Bluetooth Low Energy (BLE) connection, the WINDY application allows you to consult and act on : โข Room temperature โข The blowing force of the fan โข The occupation, you hadn't planned to be there? Turn on the heating! โข Switching the regulation on or off You can securely log in with your personalised access code (optional feature). ARE YOU AN ELECTRICIAN OR INSTALLER? THIS APPLICATION IS ALSO MADE FOR YOU! Always in Bluetooth, you connect from your mobile phone with your access code, so you can test your connection, view the status, change a setting... The application allows you to fully configure your WINDY, to easily find the cause of a failure and to act quickly by performing manual forcing. Need to locate your WINDY? The WINDY and its SmartSensor wall sensor will flash to show you the right connection to your device. The intelligent communication between the WINDY, the SmartSensor and the mobile application ensures total synchronisation, no more false displays! YOU WANT TO TEST? Demo mode is there for, project yourself into the WINDY universe!
S4C
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S4C-FS Service App is used by service people to check sensor readings, perform settings. It uses Bluetooth Low Energy (BLE) to communicate with sensors. Features: * Show Online values: - Flow - Velocity - Pressure - Temperature * Perform Settings: - Flow Settings - Units Settings - Reference Conditions - Factory Settings - Counter Settings - Output Settings
Screenshots
Verdict
WindyTool and S4C are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WindyTool ships an update every 2 months, S4C monthly. The most recent releases landed on September 13, 2026 and May 15, 2026 respectively.
| Parameter | WindyTool | S4C |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 โ better | 12 |
| Further details โ not scored | ||
| Size | 67 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | wit | SUTO iTEC (China) Co. Ltd |
In-app purchases
WindyTool
No in-app purchases
S4C
No in-app purchases








