ZeroShot Arena ("we", "the app") is an educational app for learning AI engineering. This policy explains what data the iOS and Android apps handle and why. The short version: no ads, no analytics, no tracking, and you can delete your account and data from inside the app at any time.
You can use every lesson, lab, practice mode and the AI Tutor without signing in. Your progress, streaks, XP, badges and settings are stored only on your device and are never sent to us.
If you choose to sign in (with Apple, Google where available, or email and password), we use Google Firebase to store:
When you use Sign in with Apple you can choose to hide your email; Apple then gives us a private relay address. This data is used only to run the app's sync feature. It is not used for advertising and is not sold or shared with data brokers.
The AI Tutor runs entirely on your device. On supported iPhones it uses Apple Intelligence; elsewhere it uses an AI model you can choose to download. Your questions and the tutor's answers are processed on your device and are never sent to us or anyone else.
If you download the tutor model, the app fetches the model file from Hugging Face's download servers (again only if you delete it or your phone clears it to free space). That request contains no personal data beyond what any download reveals, such as your IP address. You can delete the model from the tutor's menu at any time.
Some lessons link to explainer videos on YouTube. When you open a lesson's video section, the app loads the video's thumbnail from YouTube (Google), and playing it opens YouTube, where Google's privacy policy applies. We receive no data from this.
Accounts and synced progress are stored with Google Firebase (Authentication and Cloud Firestore). All traffic is encrypted in transit over HTTPS.
You can permanently delete your account from inside the app: open your profile (at the top of the screen) → Delete account (under Danger zone), then confirm by signing in again or entering your password. This deletes your sign-in account, your profile, and all synced progress from our servers, and clears the progress stored on the device. If you used Sign in with Apple, we also ask Apple to revoke the app's Sign in with Apple authorization. Deletion is immediate and cannot be undone. Accounts created with Sign in with Apple are deleted from the iPhone app, or by emailing us.
If you can't access the app, email hyperfocusedengineer@gmail.com and we will delete your data within 30 days.
ZeroShot Arena is not directed at children under 13, and we do not knowingly collect personal data from them.
If this policy changes, we will update this page and the date above.
Questions or requests: hyperfocusedengineer@gmail.com