PaceLens: Running Insights

See how your running is changing. Compare pace, distance, heart-rate zones and VO₂ max across any period—using the Apple Health runs already on your iPhone.

See how your running is changing—not just how far you ran last week.

PaceLens turns the runs already in Apple Health into a focused view of your progress. Choose a time range or run type and compare distance, pace, heart rate, heart-rate zones and VO₂ max in the same context.

With PaceLens you can: • spot factual training trends, including VO₂ max change • understand where your time and distance went across heart-rate zones • open a zone to see the runs behind it • review records and milestones for the selected period • use one filter across Progress, Runs, Records and export • export filtered running data as CSV

Your health data stays under your control. PaceLens uses read-only Apple Health access, processes and stores its snapshots on your iPhone, and has no account, backend, cloud sync, ads, analytics or tracking.

PaceLens does not record workouts, coach your training or provide medical advice. It helps you understand the running history you already have.