Privacy Policy — O Level Math Challenge

Last updated: 9 October 2026

O Level Math Challenge ("the app") is developed by Homilabs. This policy explains what information the app collects, how it is used, who can see it, and how you can delete it.

Playing as a guest

You can use the app without an account. As a guest, your quiz history, scores and optional nickname are stored only on your device and are never sent to us. Uninstalling the app removes this data.

Information we collect if you create an account

Account details: your email address and a display name you choose. If you sign in with Google, we receive your Google account email and name from Google (we do not receive your Google password).
Quiz activity: for each quiz you take — the topic, score, grade, your answers, time taken and date — so we can show your history and totals.
Progress totals: your total XP, number of quizzes and best grade per topic.
Group information: the friend groups you create or join, and your score snapshot in each (display name, total XP, number of quizzes, best grade).

We do not collect your location, contacts, photos, microphone or camera data, and the app contains no advertising or third-party analytics.

Who can see what

There is no public leaderboard. Your display name and score snapshot are visible only to the members of friend groups you belong to. Groups are private: they can only be joined with a 6-character invite code, cannot be searched for, and have no chat or messaging. Everything else (email, quiz answers, history) is visible only to you.

How we use this information

To operate the app: saving your progress across devices, grading quizzes, and showing group leaderboards.
To keep your account secure (sign-in, password reset emails).
We do not sell your data, use it for advertising, or share it with third parties for their own purposes.

Where data is stored

Account and quiz data is stored with Google Firebase (Firebase Authentication and Cloud Firestore), which processes it on our behalf under Google's own security and privacy terms. Data is encrypted in transit.

Deleting your data

You can delete your account and all associated data at any time inside the app: Account tab → Delete my account. This permanently removes your account, quiz history, scores and group memberships; any group you own is deleted for all its members. You can also request deletion by emailing us — see how to delete your account and data.

Children's privacy

The app is intended for students preparing for O Level / IGCSE examinations. We collect only the information described above, no more than is needed to run the features, and no advertising identifiers. If you are a parent or guardian and want a child's account and data removed, contact us and we will delete it.

Changes to this policy

If we change how we handle data, we will update this page and the "Last updated" date above.

Contact

Questions about this policy: homi55@gmail.com