Challenge Friend for beeing up earlier

From Lennart Bolduan on 2015/10/15 23:37:10 +0000

I would like to challenge my friends/children to get up earlyer. Like sending him an invitation, he accepts and i can see if the other one is up or not.
In case he is not ~ i would like to change his alarm sound or even send him a scream, a warning or record.
Of course there will be a counter like “u won 10 in a row“ or achievements like Level 1 Wake up before the alarm…
Is this possible? I would pay 3~5 €/$.

Copied from original feature request: