Zeta Privacy Policy

Effective October 11, 2026 · Updated October 11, 2026: added resume drop

Zeta is an iOS app for practicing mental math: a blocker that asks for a quick arithmetic round before apps you choose, timed Zeta Runs, events, and leaderboards. This page explains what Zeta collects, why, and the choices you have.

What stays on your phone

• Apps you block. Zeta uses Apple's Screen Time API. Your chosen apps and your screen time never leave your device, and Zeta can't see them.
• Practice history. Your Zeta score, banked minutes, and practice rounds are stored on your device.
• Your first 20-second run. The estimate you see during setup isn't saved to any account.

What Zeta collects when you create an account

• Sign-in details from Apple, Google, or your email: an account ID and, if available, your email address and name. If you use Apple's "Hide My Email", we only receive the relay address.
• Profile: your display name, your school (picked by name, or verified by your school email), and your lifetime count of correct answers, which sets your level.
• Events: events you make (title, community, date, and a 5-digit code) and events you join.
• Official Zeta Runs: the problems issued, your answers with timestamps, your score, and its review status. These are used to rank runs and prevent cheating.
• Usage events: whether you tapped Share, whether blocking is on or off, and a daily "active" signal. No app names are included.
• Sign in with Apple token: stored only so we can revoke it when you delete your account, as Apple requires.

Resume drop (optional)

Profile → Drop your resume opens a Google Form run by Zeta.

• What it collects: your name, email, school, and the resume file you upload. To upload a file, Google Forms asks you to sign in with a Google account, and the form records that account's email.
• Why: so Zeta can introduce you to quant and finance firms it partners with. Zeta has no partner firms today.
• Before it's shared: we'll email you to ask before sending your resume to any firm, and tell you which firm. If you don't say yes, it isn't sent.
• Matched to your account: we may match your resume to your Zeta account (by name, email, or school) so partner firms can see it next to your verified scores.

Anonymous setup analytics

During first-time setup, Zeta records anonymous steps (for example "saw result", "finished setup") under a random ID created on your device. These events never include your name, email, or account, and aren't linked to your account.

Who sees your data

• Your school's members see your display name, level, and best verified score on that school's board.
• People in an event see your display name, level, and best verified score from runs you played in that event. Anyone with the event's code can join it.
• Partner firms only if you opt in. The "Share me with partner firms" setting is off by default. If you turn it on, and once you have a verified Zeta Run of 70 or higher, Zeta may share your name, email, school, and verified scores with quant and finance firms Zeta partners with. Zeta has no partner firms today. If the terms change (what's shared or the threshold), we'll ask you again before sharing anything under the new terms. You can turn it off anytime in Profile.
• Service providers: Zeta's data is stored with Supabase (United States). Sign-in is handled with Apple and Google. Resume drops are collected with Google Forms and stored in Zeta's Google Drive.

Zeta doesn't sell your data and doesn't show ads.

Deleting your data

Profile → Delete account permanently deletes your account, profile, runs, school membership, and usage events, and revokes your Sign in with Apple token. Data stored only on your phone is removed when you delete the app.

Deleting your account doesn't automatically delete a resume you submitted through the form. Email oscar@vystrax.com from the address you used on the form and we'll delete your response and resume file within 30 days.

Children

Zeta is meant for students 13 and older.

Changes

If this policy changes in a way that affects how your data is shared, we'll tell you in the app before it takes effect.

Contact

Questions or requests: oscar@vystrax.com

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