How your data works.
Updated 26 October 2026. This notice describes the current GAMSAT Hub maths practice service, operated by J & Co Ventures Pty Ltd (ABN 43 700 692 020).
Trying practice without an account
Your answers, progress, preferences and unfinished round are stored in this browser. Clearing site data can remove them. You can download a backup from Progress. Guest feedback stays as a draft on your device. Choosing “Sign in to send” sends that selected draft after you sign in.
Creating an account
We use Google through Supabase to sign you in. Google provides a basic profile and email address; we do not receive your Google password. Supabase stores your account and signed-in practice data. The app’s database is hosted in Sydney, Australia; authentication and infrastructure providers may process technical information in other locations.
Saving and improving practice
When you sign in, your recorded answers, reasoning, results, timing (if enabled) and progress sync to your account. Your diagnostic and guided-session place and typed answer drafts also sync. Older standalone rounds and whiteboard drawings stay on the device where you started them. Authorised administrators can review practice-quality statistics and private question feedback to improve explanations.
Question reports and general app feedback are optional. We also save earned bonus-question access and whether a discovery has been opened, so it remains available across devices. These access records do not depend on optional usage sharing. Your submitted answer is included only if you choose to attach it. Optional usage sharing is on by default for new visitors and accounts. Previously saved choices are preserved. You can turn it off in Practice preferences or using the choice on the landing page. While sharing is on, these events record page and question openings, answers checked (result only), hints, walkthroughs, return visits, sign-in and pack actions. Random browser and visit identifiers help count activity; signed-in events are associated with your account. Visits restart after 30 minutes of inactivity. These events exclude your written answers, feedback notes, email addresses, full URLs and query strings. We do not use session replay or browser fingerprinting. Turn sharing off to stop new events and clear unsent events. This choice is saved in this browser and applies across its tabs and account changes. Events already sent may have been received. Saved learning, purchases and feedback you choose to send still work with usage sharing off. Reports show only observed activity, which may be incomplete. Hosting and authentication services also handle technical information needed to deliver and protect the service.
Purchases
If you purchase a pack, Stripe Managed Payments and Link process your payment and collect the contact, billing-location and payment information needed for checkout, tax, fraud prevention, receipts and transaction support. Card details are entered directly with Stripe and are not stored by GAMSAT Hub. Stripe and Link also handle information for their own legal and regulatory purposes, as described in the Stripe Privacy Policy. We store an account-linked purchase reference, amount, currency, status and access record. These records support your purchase and are separate from optional product analytics. Account deletion removes the active sign-in link; payment references and transaction records can remain for refunds, disputes and record-keeping obligations. Billing details are not included in optional product analytics.
Your choices
You can keep practising without signing in, turn off optional analytics, download your practice backup, export your account data or delete your account from Account & sync. The account export includes saved cloud practice, older cloud backups, feedback, access and purchase records, and account-linked usage events. Local-only Sketch drawings and unsent feedback drafts stay on their device. Deleting an account removes its active cloud practice, account-linked feedback and usage events, plus its saved practice, Sketch drawings and feedback drafts from the current browser. Copies you downloaded or saved on other devices remain under your control; infrastructure backups and technical logs follow the providers’ retention processes.
Questions or corrections
For privacy or account enquiries, contact J & Co Ventures Pty Ltd at support@gamsathub.com. Support emails are forwarded by Cloudflare to our support inbox hosted by Gmail; include only the information needed for your enquiry.
For a question-specific issue, use Report an issue after a question. For general app feedback, use You → Share feedback. When signed in, your report goes privately to the owner. You choose whether to allow follow-up. Account data can be exported and deleted directly through the app.