Last updated: April 7, 2026

This Privacy Policy describes how YENI ("we", "us", "the app") collects, uses, and shares information when you use our iOS application.

TL;DR

• We collect the email you sign in with, the subjects you pick, and basic usage data (which sessions you completed, which flashcards you saved).
• We use this to deliver your daily lessons, track your progress, and improve the app.
• We do not sell your data. We do not run ads.
• You can request deletion of your account and all associated data at any time by emailing [PLACEHOLDER: your support email].

1. Information we collect

Information you provide directly:

• Email address, used to sign you in via a one-time link (passwordless authentication).
• Display name (optional), shown only inside the app.
• Subject interests, the topics you pick for your daily learning.
• Notification preferences, the times you want to be reminded about each session.
• Saved flashcards and revisit interactions, the cards you mark to come back to.

Information collected automatically:

• Device push token, an anonymous identifier from Apple that lets us send you notifications. We never see your phone number or your real Apple ID.
• Session and completion data, which sessions you've finished, your streak, and aggregate quiz scores.
• Crash reports and performance data, technical information that helps us fix bugs (no personal content).
• Anonymous usage events, which screens you visited and which features you used. No content of what you typed or read is logged.

Information we do NOT collect: