Put this on your home screen: tap the Share button, then
Add to Home Screen. It then opens like a normal app and works offline.
Tip: the watchdog can deep-link a session — e.g. opening this page with
?w=40&r=20&rounds=12 pre-loads 40/20 × 12. Keep the screen open
during a workout; the timer keeps the display awake where the browser allows it.