Comparison

WindyTool vs S4C

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

WindyTool

Read full description

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 : โ€ข Room temperature โ€ข The blowing force of the fan โ€ข The occupation, you hadn't planned to be there? Turn on the heating! โ€ข 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!

About

S4C

Features
Read full description

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

WindyTool4 screens
S4C4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

WindyTool ships an update every 2 months, S4C monthly. The most recent releases landed on September 13, 2026 and May 15, 2026 respectively.

ScorecardNo meaningful differences
WindyTool versus S4C: the parameters behind the verdict, then further details
ParameterWindyToolS4C
PriceFreeFree
Update frequencyEvery 2 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 โ€” better12
Further details โ€” not scored
Size67 MB35 MB
Age rating4+17+
DeveloperwitSUTO iTEC (China) Co. Ltd

In-app purchases

None

WindyTool

No in-app purchases

None

S4C

No in-app purchases

Questions

Is WindyTool free?
WindyTool is free to download, with no in-app purchases.
Is S4C free?
S4C is free to download, with no in-app purchases.
Do WindyTool or S4C have ads?
Neither WindyTool nor S4C shows ads.
Which is updated more often, WindyTool or S4C?
WindyTool ships an update every 2 months, and S4C monthly. Most recently, WindyTool was updated on September 13, 2026 and S4C on May 15, 2026.

Other comparisons