About

Health data you already have.
Signals you can act on.

Longevity Arc exists because your Apple Watch and iPhone already collect the raw material for understanding how you're aging — HRV, VO₂ max, sleep, gait, resting heart rate, blood pressure, breathing. Almost nobody turns that into something you can act on before it's too late to matter.

Mission

  • 1Use data you already generate. No new hardware, no new habit — just your existing Apple Health history, read on-device.
  • 2Turn noise into one clear call. Seven independent longevity signals, blended into a single daily score and a plain "push, recover, or watch this trend" answer.
  • 3Keep it private by architecture, not by policy. Signal math runs on your iPhone. There's no backend database of your vitals to breach, sell, or leak.

About me

RJ

Radosław Jóżefowicz

Indie developer · r6lab

I build small, focused software products — Longevity Arc is the current one. I'm not a physician; the app is built on published longevity research and Apple's own HealthKit metrics, and it's designed for wellness insight, not diagnosis. If you have questions, feedback, or a bug to report, I read everything sent to radek@jozefowicz.dev.

Elsewhere

jozefowicz.devPersonal site & writing apps.jozefowicz.devOther apps & projects GitHub@rjozefowicz X / Twitter@rjozefowicz LinkedInRadosław Jóżefowicz
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