I've gotten 4 neighbors and both my parents to dl it recently. The neighbors and I had an hour long conversation about all the birds in the neighborhood over drinks last weekend.Downloaded!
One word of warning is that if you have mockingbirds, brown thrashers or other minic birds, they can fool the app, so tread lightly when claiming one on your list. I've learned to try and visually ID them before adding them now. But for the most part, the app is pretty amazing. It heard a bald eagle and a few other small warblers without me even hearing them, only to spot them minutes later. The photo ID is a good tool as well.
If you go down the rabbit hole like I did, then you can dl the ebird app, which is a companion app for making your lists. What I do now is have the ebird app open so I can add birds quickly, and have Merlin running in the background for a quick ID if needed.
Reddit has an active birding page that is a good reference point with tons of info on ebird/merlin and other guides/tips if you venture down the hole like I did.