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.
Browse stacks