Quick answer: SupaTan's Apple Watch app puts your whole tanning session on your wrist: live UV index, temperature, today's best window, a one-tap Start Session button, and flip reminders as haptic taps. Your iPhone stays inside, out of the heat and sand, while the watch quietly runs the plan.
Why a tanning app belongs on the wrist
Tanning is the one activity where your phone is actively in the wrong place: it overheats in direct sun, gets sandy or wet, and glancing at a timer means holding a hot slab of glass over your face. A watch solves all of it — and haptics beat notifications when your eyes are closed.
What SupaTan does on Apple Watch
- Live UV at a glance. The current index and its level (“6.5 — High UV”) plus your location and temperature.
- Today's best window. The optimal tanning hours (“11–14”) right under the UV reading.
- One-tap sessions. Start, pause and finish guided sessions without touching your phone.
- Flip reminders as taps. When it's time to turn, the watch taps your wrist — unmissable even mid-nap, invisible to everyone else.
- Session sync. Everything logs back to the iPhone app: durations, flips, SPF, glow results and streaks.
The poolside workflow
Check the watch face → UV 6.5, window open. Tap Start Session. Lie back. The watch taps: flip. Flip. It taps again: reapply SPF. Final tap: session complete. Your phone spent the entire time in the shade and your tan spent it building evenly.
SupaTan is a single App Store download that includes the full Apple Watch companion. Set up your skin profile on iPhone once; from then on the watch is a complete remote control — UV, windows, sessions and flip taps — for every pool and beach day.
Getting set up
- Download SupaTan on iPhone and complete the 60-second skin quiz.
- The Watch app installs automatically (or via the Watch app's App Store) on watchOS 26.2+.
- Grant location on the watch so UV readings track wherever you are — including that beach with no phone signal for your phone, which is inside anyway.
- Start your first wrist session. Every flip and SPF alert arrives as a tap.
Frequently asked questions
Can Apple Watch show the UV index?
Apple's built-in Weather app can show a daily UV summary, but SupaTan's watch app is built around it for tanning: live UV plus the day's best tanning window and a session timer that acts on the number, not just displays it.
Does SupaTan on Apple Watch work without the iPhone nearby?
The watch app is designed to run your session hands-free at the pool or beach while your phone stays inside; sessions sync back to iPhone. You'll set up your profile on the iPhone first.
Which Apple Watch models are supported?
Any Apple Watch running watchOS 26.2 or later, paired with an iPhone on iOS 26.2+.