The companion app

Sundial.

A reflective tracker for peptides. Slow, warm, and built around how protocols actually unfold, in weeks, not workouts.

Pre-loaded stacks

Buy on Tan Girl, the stack pre-loads. No re-entering vials, doses, or schedules.

Cycle-aware

Knows the difference between days-on, days-off, and end-of-cycle. Reminds you accordingly.

A real journal

Not a streak counter. Prompts that ask what's softening, what's shifting, what to keep.

Coming to iOS.

Sundial is in private beta. Buy a stack on Tan Girl and we'll send you the TestFlight invite.