Only free apps and Watch-specific apps can be downloaded from the Samsung Galaxy Apps. Availability of app download may also vary by app developer, OS, software version and service region. While you can use the upcoming Galaxy Watch Active with your iPhone, the full potential will be limited.
It appears that Samsung Watch 4 and Samsung Watch 5 will continue to make use of the Wear OS based on the Google Mobile system architecture. All the previous generation Galaxy smartwatches are still compatible with iOS and iPhone devices because these are based on the Tizen OS. On a side note, MontBlanc’s summit is powered by Wear OS 3.
How to pair you Galaxy Watch with you iPhone and how to make phone calls work!?I moved to IOS recently but I am still using my Galaxy Watch with the iPhone 1 kShHNLp.