Funny App that will let you to make random decision when a group is involved.
To decide:
who will invite ?
who will starts any game ?
who will have to perform some work ?
who has to wash the dishes ?

Put your Apple device on a table or counter, put the number of stakeholders and the arrow will indicate who pays the piper.

etc...etc...
Very easy to use.
Wifi connection not required.
Developed also for "Apple Watch".