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📏Early slice

Caliper

Apple Health body composition, off the phone.

Caliper is the first slice of a personal health and fitness assistant. It reads scale samples from Apple Health — weight, body fat, and lean mass — and writes one JSON file I can get onto a Mac.

  • One file, three metrics

    Last 30 days of body mass, body fat, and lean mass. Nothing else — no workouts, heart rate, or steps.

  • Personal iPhone only

    Not an App Store product. It runs on my phone, signed with a personal Apple ID, until a paid developer seat makes sideloading less brittle.

  • The rest stays parked

    The dashboard, workout player, and on-phone coaching wait until this capture edge is solid. Caliper is the instrument, not the coach.

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