Years ago I reprogrammed my Pebble watch exactly for this. Tap button once: +1 minute. Tap twice: +5 minute. Tap three times: +20 minutes. Tap secondary but

Years ago I reprogrammed my Pebble watch exactly for this. Tap button once: +1 minute. Tap twice: +5 minute. Tap three times: +20 minutes. Tap secondary button: Reset timer. And this app was always in foreground.