Move Countdown of remaining time to cellphone to stay mobile

Use Countdown timer when waiting for computer to finish jobs. Countdown on your mobile phone keeps you mobile and present at completion time.

Good uses of mobile phone timer countdown:

while installing large things
while uncompressing files
while copying files
while downloading files
while cooking

It has to do something with "time remaining"
Countdown is acutally normal alarm with no need to do the calculation of remaining time.