01
What we're building next
Trailhead already makes private workout tracking and encrypted sharing feel simple. Here is where we are taking it next.
Development notes
Inside the build.
Engineering choices, privacy boundaries, and practical trade-offs behind Trailhead.
02
Why we couldn't sell your workout data—even if we wanted to
A technical look at how Trailhead keeps activity history on your phone and moves shared workouts as temporary encrypted packages.