StretchApp 2
StretchApp 2 contains a library of nearly 100 stretches specifically for OPTPs Stretch Out Strap, TRUEs Stretch cage, foam rollers, or no equipment at all.
StretchApp 2 will run your saved routines and coach you through them with audio and visual cues.
StretchApp 2 can track the time you spend stretching via HealthKit.