Health coach. iOS developer.
Builder of humane health apps.
I'm Paul Calver, a Precision Nutrition Certified Master Health Coach and an iOS developer with 15 years of experience. I build health apps the way I coach: evidence first, no guilt mechanics, no fake certainty.
Most health apps are built by engineers guessing at behaviour change, or by coaches who can't ship software. I've spent fifteen years doing one and hold five certifications in the other. Everything I ship, and everything I write here, comes from that overlap.
Apps in progress
RYZR
Become a better riser.
A humane morning companion that helps you start the day before your phone does. No streaks, no guilt, and momentum you can return to after any absence.
Manifest
We don't create change. We reveal it.
A reflection app that surfaces quiet evidence of change from your own words: perspective and agency instead of habit tracking, gamification or fake certainty.
BODENow
One clear read on your state, before it matters.
A pre-performance state check for high-stakes moments. An explicit Apple Watch reading against your own baseline: one state, one recommended action, honest uncertainty when data is stale.
Writing
Evidence-first articles on sleep, stress, mornings, behaviour change, and why most health-app mechanics make people worse. Written by me, sourced, and signed. Read the articles →