Browser
Use it straight away
Go to timer.uptimer.app
and work normally. Opening the page does not start your Lite window.
Desktop
Install UP TIMER
In a compatible desktop browser, use the browser install option when it is available. Installed UP TIMER can launch independently from the normal browser window; on Windows this can include Start menu or taskbar access.
Phone
Install or add to Home Screen
On supported Android devices, use the available Install UP TIMER
option. On iPhone and iPad, use the browser sharing controls and choose Add to Home Screen
where available. Android and iOS behaviour is not identical.
Same account, same access model.
Installation does not create a separate mobile purchase. Sign in with the same UP TIMER account when you want account-based access on another supported device. Do not assume every preference or running timer synchronises live between devices. Notifications, voice, sound and background behaviour depend on the browser, installed-app environment, operating system, permissions and power-management settings.