RunPlan is a free, Apple Watch-first running coach. Complete, periodized plans from 5K to marathon following the classic methodologies (Daniels, Pfitzinger, Higdon) — they run entirely from the wrist: live intervals, pace targets, haptic cues, no iPhone needed on the run. Paces come from a race you've actually run. No subscription, no account, no ads. Nine languages. The plan engine is open source.