The companion app
Sundial.
A reflective tracker for peptides. Cycle-aware reminders, dose tracking, and a journal built for how protocols actually unfold — in weeks, not workouts.
Download on the App Store →Currently iOS. Android, in time.
What it does.
Pre-loaded stacks
Buy a stack on Tan Girl and it loads into Sundial automatically — vials, doses, and schedule, already configured.
Cycle-aware reminders
Knows the difference between days-on, days-off, and end-of-cycle. Nudges you accordingly, then gets out of the way.
A real journal
Not a streak counter. Prompts that ask what's softening, what's shifting, what to keep — so you can actually tell what's working.
Dose tracking
Log injections with one tap. See your full history at a glance, by peptide or by week.
Built around protocols
Most trackers are built for pills or workouts. Sundial is built around how peptide protocols actually run — pulses, washouts, and all.
Yours, privately
Your data stays yours. No social feed, no leaderboards, no sharing by default.
Peptides reward patience.
The hard part isn't the first injection. It's week six, when you're wondering if it's working, when the next dose is, whether you're still on-cycle. Sundial holds the rhythm so you can stop holding it in your head.
Get Sundial on the App Store →Free to download. No account required to start. Browse stacks to pre-load one.