Dated product notes. Each item links to the page that changed when there is one.
- Added — KPH to MPH converter with road-speed, running-speed (with pace) and mph to km/h charts. Open page
- Added — Guide: general physical preparation (GPP / PPG) for runners — 10 exercises, a 30-minute session and an 8-week plan. Open page
- Added — Calculator pages now ship How it works, Formula, Example, Limitations, plus Methodology and Sources — six locales, no English dump. Open page
- Added — Disclaimer page (training, medical, heart rate, calories, race prediction) and About Who / Why / How. Open page
- Added — Guides for pace, converters, race prediction, VDOT and pace vs heart rate, in six locales. Open page
- Improved — Training-plan calendar view, wristband print behind Pro, and share cards for plans and predictions. Open page
- Added — Garmin section: device and metric pages in six locales, plus site-wide dark mode. Open page
- Improved — Printable pace band: vertical wrap layout, print-only band, row spacing, and on-page print preview. Open page
- Fixed — Asset URLs now include a content hash so returning visitors are not stuck on stale JS after a deploy. Open page
Want a new tool or fix?
Tell us which calculator, pace chart or fix would help — we build what runners ask for. Replies usually come back in 1–2 days.