I built Kingtide for myself after I strained my quad in June. It felt like my workout system was broken. I'd get PT exercises, have to figure out what in my current routine needed to change, and then have it all change again when my pain flared up or something didn't go according to plan.
No app was flexible enough for what I was going through, so I built my own.
By late September I'd run the longest run of my life, almost four miles, and been cleared for surfing and tennis. Soccer is next, hopefully. Kingtide helped me stay consistent in the gym and with my PT routine the whole way.