Privacy Policy

What is collected

Account information

• Email address
• First name, last name, and a display username
• A profile picture, only if you upload one
• A password, if you sign up with email. It is hashed by our authentication provider and is never visible to us.

If you use Google sign-in

Google shares your name, email address, and profile picture. That is all that is requested, and it is used only to create your profile. Astro Coach cannot read your Gmail, Drive, contacts, or any other Google data.

Practice activity

• Which questions you attempt and the answers you submit
• Whether each attempt was correct, and when you made it
• Questions you bookmark

This is what produces your dashboard: accuracy, attempt history, and your saved and missed questions.

Free-response answers and AI grading

• The answers you type for free-response questions
• Photos or PDFs of your written work, if you upload them. These are kept in private storage, and the app shows them only to you.
• The score and feedback each graded attempt receives

When you submit an answer for AI grading, your answer and any pages you uploaded are sent to Google's Gemini AI service, together with the question and its marking scheme, so it can be graded. Your name and email address are not sent. Short-answer questions are checked by Astro Coach itself and are never sent to an AI service.

Site usage (Google Analytics)

Google Analytics records which pages are visited, roughly where visitors are (country or city level), the type of device and browser, and how people arrive at the site. It uses cookies to tell repeat visits apart. This is only used to see which parts of Astro Coach are useful. It is not linked to your account, and it is not used for advertising. You can block it with a browser extension or Google's opt-out add-on.

What is not collected

• No advertising or marketing trackers
• No card details — payments are handled by Stripe, and Astro Coach never sees your card number
• No precise location data

Who your data is shared with

Your data is never sold or shared for advertising. It is handled by these service providers, to run and improve the app:

• Supabase — accounts, sign-in, the database of your progress, and storage for profile pictures and uploaded work
• Vercel — hosting and serving the website
• Google — sign-in, only if you choose to sign in with Google
• Gmail — sends account emails, such as password reset links
• Google Gemini — grading free-response answers, only when you submit one for AI grading
• Stripe — payments for Pro and extra grading credits, only if you buy them. Astro Coach keeps just your plan status and a Stripe customer reference.
• Google Analytics — site usage statistics, not linked to your account, as described above

Your control over your data

• View and edit your name, username, and profile picture at any time in Profile Settings.
• Delete your account permanently using Deactivate Account in Profile Settings. This removes your account and your saved progress. It cannot be undone.
• Ask a question about your data, or request its removal, by emailing the address below.

Data is kept for as long as your account exists. Deleting your account removes it.

Students and younger users

Astro Coach is built for high school and early university students. It is not directed at children under 13, and accounts should not be created for them. If you believe a younger child has created an account, email the address below and it will be deleted.