Touted as Tinder for real estate, this app is a savior for those looking for a new apartment or house. Houses or rooms are presented in a deck of cards and you swipe left or right to save or pass respectively. Even if you're not in the market for a new place, Doorsteps Swipe can give you a good idea of what is available. It also studies your swiping behavior to tell you what kind of houses you have tended to pick. Search houses in your immediate vicinity based on your location, or draw up a region on the app's map.