Apple Health
CalFitness reads and writes the health data you permit and no more. Weigh-ins recorded elsewhere flow in; completed workouts flow out.
Granular permission
You grant each data type separately through iOS itself. The app asks for what it uses and works without the parts you decline.
Weigh-ins from wherever you weigh
A smart scale that writes to Health feeds the weight trend without you retyping anything, which in practice is what makes daily weighing sustainable.
Questions
- Does it read my steps?
- Only if you grant it. Note that measured maintenance already accounts for how much you move, so step data is context rather than an input to your target.
Try it
CalFitness is free to start. Apple Health is in the app from the day you install it.