Actifit is the most underrated app on Hive to me. I believe it can be the easiest way to onboard masses.
Do some 10k steps a day. Snap a shot. Share your effort. Earn like $0.25. Not much, but it only took you an extra 30 seconds or so.
See that it works, and the money is real.
Start thinking what else could you do with that Hive thingy.
Boom, we have a new user.