Know exactly how much to draw.
Enter your vial, your dose, your water. Dosii shows the exact line on your syringe. That's it. That's the app.
Enter your vial, your dose, your water. Dosii shows the exact line on your syringe. That's it. That's the app.
Inside the app
Vial size, dose, and water — Dosii suggests the best water volume automatically.
The syringe shows exactly where to draw. The card tells you the number.
No tabs, no menus, no onboarding. Open the app and start calculating.
An animated syringe shows exactly where to draw — 30u, 50u, or 100u. No math, no conversion tables, no guessing.
Dosii suggests how much BAC water to add so your dose lands on an even syringe tick. Tap to apply. One less thing to think about.
Enter what you paid for the vial. See cost per dose and how many doses you get. Simple math, instantly answered.
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.