Do Not Use until developer fixes app!
It will brick your dumbbells. Easy to use and set up but after it does the automatic firmware updates it will jam up your dumbbell controller and you have to find and follow online guides to unsync your phone then do a factory reset on the dumbbells; at which point they’ll work fine again just no online connection. There are so many posts online about it that I can’t believe they still advertise the “smart” function of the dumbbells and advocate this app.