allow hh:mm and -hh:mm input (also in apps)
I have a "work" goal where I input my starting hours (negative) and ending hours (positive) each day. So if I work 9-5 I would first enter -9 in the morning, then 17 in the evening. It's quite a hassle converting minutes to decimal numbers. I know the web platform allows inputting data in the "hh:mm" form, but the android app does not. Also, neither platform allows me to enter "-hh:mm" for my starting hours.
Between Two Parks commented
That is a clever way to do time-duration arithmetic. I applaud.