Whole House fan smartapp?

Hi community. Are there any smartapps out there similar to this one that seems to have been cancelled/discontinued.

I can probably do something like this by building out a couple of routines, but a smartapp would be ideal if one (still) exists?

Looking to cool the house using the whole house fan based on some simple conditions.

Fan on

  • if home/night
  • if indoor temp is > 75
  • and outdoor temp is <77
  • and windows/doors are open
  • then turn the fan on

Fan off

  • if fan on
  • and indoor temp < 75
  • fan off

Two Routines should take care of it.