Each week seems to bring a new crop of apps designed to help travelers go more places, get more for their travel dollars and find better things to do while they’re out in the world. And each week, being devotees of both travel and tech, we download; we open; we sign in and give them a shot. Most never get opened again.

But now and then we find one we come back to over and over -- and even more rarely one we just have to tell you about. Here are a handful earning prime spots beside the Travelzoo app on our home screens these days.