Privacy Policy
Last updated November 15, 2026
Dosage Practice is run by Sibyl Entertainment Pte Ltd ("we"). This page says what we collect when you use dosagepractice.com, why, who else sees it, and how to get it deleted.
The Short Version
- You can use the free problems without telling us anything. Your progress is kept in your own browser.
- If you make an account, we store your email address (and your name and photo if you sign in with Google) and your practice progress.
- If you buy the full course, Stripe handles your card. We never see your card number.
- We do not sell or share your data for advertising. We do not use advertising trackers.
- You can delete your account by sending us a message. We delete everything except the payment records tax law makes us keep.
What We Collect, and Why
Without an Account
The lessons work in your browser. Your points, streak and which problems you have answered are saved in your browser's local storage on your device, so you can close the tab and come back. Nothing is sent to us. Clearing your browser data erases it.
With an Account
You can sign in with Google or with a link we email you. We then store:
- Your email address, and if you used Google, the name and profile picture Google gives us. We use these to sign you in and to contact you about your account.
- Your practice progress: points, streak, lesson completion, and a log of problems attempted with your answers, whether they were right, and how long you took. We use this to show your progress on any device, to decide what to show you next, and in aggregate to find problems and hints that need improving.
- Mock exam results.
If You Buy the Full Course
Stripe handles payment on its own pages and collects your card details, name and billing address under Stripe's privacy policy. Stripe tells us the payment or subscription status, plan, amount and dates, which we store to give you access. We never receive or store your card number.
If You Contact Us or Fill In a Form
If you send us a message, report a problem or request a class quote, we keep what you typed, including your email address if you gave it, so we can reply and fix things. These messages are also forwarded to our mailbox through an email delivery service.
Technical Data
Our hosting provider (Google Firebase) records standard server logs, including IP addresses, for security and to keep the service running. We do not currently run analytics or advertising trackers. If we add a privacy-respecting analytics tool later, we will say so here.
Who Else Sees It
Only the services that make the site work: Google Firebase (sign-in, database, hosting, in the United States), Stripe (payments), Resend (delivers your messages to our mailbox), and Google if you sign in with Google. Each processes data on our instructions and under its own published terms. We do not sell personal data and we do not share it with advertisers.
How Long We Keep It
We keep account data while your account exists. After you delete your account, we delete your profile, progress and attempt log within 30 days. We keep payment records as long as tax and accounting law requires, typically seven years.
Your Choices
- Reset your progress any time from the account page.
- Delete your account by sending us a message with the address on the account. We will confirm and delete what we hold, subject to the retention rule above.
- See what we hold by asking; we will send it to you.
- Cancel a subscription from the account page. Access continues to the end of the period you paid for.
If you live in California, the EU, the UK or another place with specific privacy rights, those rights apply. The requests above are how you exercise them. We do not sell personal information.
Children
The site is for nursing students and is not directed at children under 13. If you believe a child has given us personal information, tell us and we will delete it.
Changes and Contact
For changes that matter, we update the date at the top and email account holders. For questions or requests, use the contact form.