Lift Kit
An Android app for the week's routine, logging sets as you lift, protein for the day, and a home-screen exercise widget.
Each person gets their own gym calendar and one routine. The phone stores workouts on the device. Cloud backup starts after you connect a profile.
That link opens the newest GitHub release of Lift Kit. Install the APK from there, then come back to this page and create a profile.
Create your profile
You will get a QR code. In the app, open About and tap Scan profile.