Comparison

JSmartWatch vs ST4U

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

Head to head
About

JSmartWatch

Control your smart home devices directly from your wrist. This app allows you to view device status, execute scenes, and manage switches, locks, and thermostats with quick access to your favorite items.

Highlights
  • View and execute scenes
  • Favorite scenes, rooms, and devices
  • View rooms and device status
  • Control switches, locks, and garage doors
  • Adjust thermostats
  • iPhone app for configuration
Features
Read full description

JSmartWatch is a WatchOS app for using your SmartThings smart home. This app provides quick and easy access to information about your smart home from your wrist. With this app you can: * View and execute scenes * Mark scenes, rooms and devices as favorites to easily access your favorite items * View your rooms * View devices in each room including the device status * Turn switches on and off * Lock and unlock locks * Open and close garage doors * Adjust the light level of switches * Adjust thermostats in Fahrenheit NOTE: You must have an Apple Watch with WatchOS 7.1 or greater to use this app. This includes an iPhone app however the iPhone app is ONLY used for configuring the watch app. Do not download this app if you do not have an Apple Watch!

About

ST4U

Features
Read full description

With the ST4U App we offer you the possibility to control and manage your Smart Home via your Smartphone. Brands such as Velbus, Niko, Philips, Sonos, etc. are supported. Our mission, vision and goal is to bring various brands together under 1 platform in order to arrive at 1 total concept. In addition, we also want to integrate devices or parts that are not yet 'Smart' in our platform, this can be done via home automation (e.g. Velbus) or a tailor-made solution. To ensure that you as a customer can use these devices optimally 'Smart', we have created our own platform for this, we call this platform ST4U, Smart things for you! We offer our own Cloud Service and hereby offer you an Application that you can use on Laptop, Tablet or Smartphone.

Screenshots

JSmartWatch1 screens
ST4U4 screens

Verdict

The call

The clearest difference is in-app purchases: ST4U at none against JSmartWatch's 3. On price, update cadence, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. JSmartWatch sells 3 one-off in-app purchases. ST4U asks for nothing beyond the download.

UpkeepUpdate frequency

JSmartWatch ships an update every 6 weeks, ST4U every 3 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 9 level
JSmartWatch versus ST4U: the parameters behind the verdict, then further details
ParameterJSmartWatchST4U
PriceFreeFree
Rating4.1 (12 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings12 — better—
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size10 MB35 MB
Age rating4+4+
DeveloperJulian WerfelHePoJ

In-app purchases

3 purchases

JSmartWatch

One-time3
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99
None

ST4U

No in-app purchases

Questions

Is JSmartWatch free?
JSmartWatch is free to download, with in-app purchases available.
Is ST4U free?
ST4U is free to download, with no in-app purchases.
Do JSmartWatch or ST4U have ads?
Neither JSmartWatch nor ST4U shows ads.
Which is updated more often, JSmartWatch or ST4U?
JSmartWatch ships an update every 6 weeks, and ST4U every 3 weeks. Most recently, JSmartWatch was updated on October 24, 2026 and ST4U on October 9, 2026.

Other comparisons