The short version: VialMath collects nothing. There is no account, no server, no analytics, no advertising and no tracking. The numbers you type and any calculations you save stay on your phone. We never receive them.
VialMath is published by Techlathery LLC, a Michigan limited liability company. It is a calculator: you enter a vial amount, the water you added and your dose, and it shows how many syringe units that is.
VialMath does not ask for your name, age, email, location, contacts, photos or any health information.
| Feature | What is sent, and to whom | When |
|---|---|---|
| Unlocking saving | The purchase is handled by Google Play (or the App Store, if VialMath is offered there) under its own privacy policy. We never see your card or account. We use RevenueCat to confirm the purchase: it receives a random ID the app creates and your purchase status, never your calculations or anything about you. | When the app starts, when you buy, and when you tap Restore purchase |
| Share | The calculation text goes to whichever app or person you choose in your phone's share sheet. | Only when you tap Share |
Because we never receive your data, we cannot and do not sell or share it with anyone, for any purpose, including advertising.
VialMath is intended for adults 18 and older and is not directed to children.
You can delete any saved calculation in the app. Uninstalling VialMath deletes everything it stored. There is nothing on our side to delete.
If this policy changes in a meaningful way, this page will show the new version and its date.