Never second-guess a peptide dose again. Dosii shows the exact line on your syringe — for any peptide, any concentration.
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Drop your syringe visualization
screenshot at public/screenshots/hero.png
Inside the app
Syringe visualization screenshot
See the exact fill line on a real syringe drawing. No guesswork.
Protocol dashboard screenshot
All your peptides, doses, and schedules in one view.
Cost breakdown screenshot
Know what every dose costs — per day, week, or month.
No more spreadsheets. No more Reddit threads. No more guessing.
Enter your vial concentration and target dose. Dosii draws the exact fill line on your syringe — 30u, 50u, or 100u. No math, no guessing.
Managing a stack? Group peptides into named protocols. See your full daily schedule and what each one costs.
Track doses remaining per vial, monitor freshness after reconstitution, and see projected run-out dates before you run dry.
Cost per dose, per day, per week, per month — broken down by peptide or across your whole protocol. No surprises.
What you dose is nobody's business but yours. Dosii runs entirely on your device — no accounts, no cloud, no way for anyone to see your data.
$9.99
One-time purchase. No subscriptions. No ads. No in-app purchases.
A precision instrument, not a recurring expense.