Health Science

Apple Health, actually charted. Health Science reads the years of data already on your iPhone and draws the charts the Health app won't — without an account, a server, or a single line of networking code.

What it draws

• Every run on one chart — three months, six months, a year or all of it, with faster runs higher up the axis. Your best run is circled, and breaks in training are marked rather than silently bridged.
• Pace spread, week by week — each week of running as a ridge, so a steady week looks different from a scattered one. An average can't show that.
• Pace against heart rate — this season's runs contoured against your earlier ones. When the recent contours sit higher, you are running faster at the same effort.
• Sleep and steps by clock time — when your nights and your movement actually happen, not just how much of each there was.
• Resting heart rate and weight — over any range, with trend lines that stop at gaps instead of guessing through them.
• Five looks, same data — blue ink on graph paper, a black instrument panel with orange dot-matrix readouts, elevation-tinted terrain, phosphor green, or the stock iOS look. Every chart renders in every theme.
• Private by construction — there is no networking code in the app. No account, no servers, no analytics, no third-party SDKs. Your health data is read on the device, drawn on the device, and goes nowhere else.