Frequently Asked Questions
Straight answers. No marketing speak.
Privacy & Data
Does Dosii collect any data?
No. Zero data collection. No accounts, no server, no analytics, no tracking pixels. Your data lives on your device and nowhere else. See our privacy policy.
What happens to my data if I delete the app?
It's gone. Everything is stored locally on your device. Deleting the app deletes all your data permanently.
Is there a cloud sync or backup?
No. This is intentional. Your dosing data never touches a server.
Pricing
How much does Dosii cost?
$9.99, one time. No subscription, no in-app purchases, no ads. You own it forever.
Why one-time pricing instead of a subscription?
A calculator should not charge rent. You pay once, it's yours. Every update included.
Is there a free trial?
No, but the App Store offers a refund policy if Dosii isn't what you expected.
The Calculator
What does Dosii actually do?
You enter three things: your vial size (mg), your dose (mg or mcg), and how much water you added. Dosii shows the exact line on your syringe. It also calculates cost per dose if you enter the vial price.
What syringe sizes are supported?
30-unit, 50-unit, and 100-unit insulin syringes. The syringe visualization updates to match whichever you select.
Does it work with pre-mixed compounds like testosterone?
Yes. Pre-mixed mode lets you enter concentration (mg/mL) and vial volume directly, skipping the reconstitution step.
What are the water suggestions?
When you enter a vial size and dose, Dosii suggests BAC water amounts that make your dose land on an even syringe tick — so you never have to eyeball between lines.
Getting Started
What platforms is Dosii available on?
iOS only.
Do I need to create an account?
No. Open the app and start calculating. Zero onboarding.
How do I get started?
Download from the App Store, enter your vial size and dose, and Dosii shows you exactly where to draw on your syringe. Takes about five seconds.
Want to see the app in action?
See how it works →