ApexState – Browser-based sim racing physics calculator

Summary: ApexState is a zero-install web app that predicts braking adjustments during endurance sim races by calculating tire degradation and fuel burn effects. It runs in the browser without impacting game performance and includes a local note-taking feature for strategy.

What it does

ApexState uses a Python physics engine to compute "Braking Migration," showing how many meters earlier to brake as tires wear and fuel decreases. It visualizes tire performance changes and allows saving strategy notes locally on track maps without requiring login.

Who it's for

It is designed for endurance sim racers who need precise braking adjustments as car handling changes over long stints.

Why it matters

ApexState solves the problem of changing braking points during races by providing real-time calculations without heavy software that reduces frame rates.