The original idea was "Waze for snow sports"
The "minimum" features I've aimed for:
A map of the mountain (slopes + lifts)
A way for users to add info about the slopes (ice, rocks etc) and lifts (out of service, long queues etc)
Local resources: cameras, communities, shops, instructors, events.
Work offline.
Since this is 2020 and COVID has mostly ruined the snow season in my country I'm treating this winter as a way to gather feedback.
The app can be found at https://wunti.app/