Really useful app, lots of feedback...
Suggestions: 1. Add a countdown timer for the intervals, so you know how long left you need to hold a posture, and how long left until you need to hold the posture again, in combination with the counter that counts up also.
2. It would also be useful if the iPhone app and the Apple Watch app would work in combination, instead of separate systems - when you open the app in your phone, it would be useful if the Apple Watch app started at the same time, or sync so that when you press start or change the settings on the phone, it would start on the watch at the same time.
3. a stronger buzz on the wrist is also useful, and possibly a louder chime.
4.A timer and counter also needs to be added to the Apple Watch, the display could be more detailed, but I really do like the LCD fonts used throughout.
If these suggestions were added I would have no problem rating this as 5*****.
A very clever app that has a lot of potential to Physiotherapy patients.
If I can be of any further help, please reply with an email address I can submit further suggestions.