Stopwatch Pro: a stopwatch that survives a closed tab
Stopwatch Pro works the same way (tap to start and pause, beep with − and +, Reset), but it keeps running when you leave. Close the tab, reload, shut the browser: come back and the clock is still counting.
What makes it different
• The run is kept on your device: a reload or a closed browser does not lose it.
• While it runs, it keeps the phone screen on, so the beep is not held up by a sleeping phone.
• Big minutes and seconds, no hundredths: readable from across a room.
Who can do what
• Anyone, signed in or not.
Account and second person
• Neither needed.
Cost
• Free.
Honest limits
• The run lives on one device and one browser; another phone starts at 00:00.
• A phone on battery saver or an older browser may still let the screen sleep.
• Beep from Off to 99:59.