I built this for my own PT routine — 15 stretches a day for a disc injury. The stretches weren't hard; keeping track of everything was. Was that rep 8 or 9? Did I hold for 30 seconds? Did I do both sides?
So I made an app that counts for me. Out loud.
Now I put in headphones, hit start, and zone out. It announces each stretch, counts through reps and holds, tells me when to switch sides. I don't touch my phone again until it's done.
Free, no account needed, works offline

Kuvox is preloaded with 34 common physical therapy exercises. Build your customized plan from the library or add your own exercises. Adjust reps, hold times, and sets to fit your needs, then save your routine. When you're ready to try it out, just press Start Workout.
Please note: Kuvox provides timer and tracking tools, not medical advice. Always consult your healthcare provider before starting or modifying an exercise routine. Stop any exercise that causes pain.
Your stretches and routines stay on your device. No sign-up, no personal data collected, no cloud sync. Add it to your home screen and it works completely offline.
If you've got a stretching routine you're trying to stick to, give it a shot.
▶ Try Kuvox