For watches I like GymRun. I don't take my phone into the gym and the watch functionality mirrors the mobile app on my Samsung and on my Garmin when I had one. Sets, reps, routines, rest time, etc. The main drawback for me is it doesn't sync with Strava natively so I have to sync with S Health which syncs with Strava. Logging your routine is necessary with progressive overload, and this beats pen and paper.