- Your name, email, and password when you sign up
- Your uploaded materials (syllabi, notes, slides) — encrypted at rest in Supabase storage
- Your quiz answers, study preferences, and character name
- Your assessment scores and study activity (to power the preparedness score and streaks)
- Basic analytics: which pages you visit and features you use (helps Hippo improve)
- Your grades or GPA from any school system (unless you enter them yourself)
- Your location or contacts
- Anything from your device outside Hippo
- To build your personalized study system (plans, guides, exams)
- To send you nudges through the coach system (opt-out anytime)
- To improve Hippo over time (aggregate patterns, never individual data)
- YOU always see all your data
- Anthropic (the makers of Claude AI) processes your uploads to generate outputs — they don't train on your data or store it
- Google (calendar integration only) — only events Hippo created, only if you connected calendar
- No one else. We don't sell your data. We don't share with advertisers. We don't have advertisers.
If you connect Google Calendar, Hippo asks for two permissions and no others: the ability to create and manage calendar events, and the ability to check when you are free. Hippo uses them to put your study sessions on your calendar and to avoid scheduling over something you already have.
- Hippo creates, updates and deletes only the events it made for your study plan
- Hippo checks your free and busy times — it never reads the contents, titles or guests of your other events
- Hippo stores the access token needed to do this, and your calendar preferences. Nothing else from your calendar is stored
- Disconnect any time in Settings. Events Hippo already created stay on your calendar; Hippo simply stops managing them
Hippo's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Hippo does not transfer this data to anyone, does not use it for advertising, and does not use it to train AI models.
- See everything Hippo has on you (email kenna@hippo.study — we'll send you a data export)
- Delete your account and all data anytime (settings → account → delete)
- Correct anything that's wrong
- Take your data with you if you leave
Hippo is for college students. We don't knowingly collect data from anyone under 13.
If you're under 18 you need a parent's OK to use Hippo.
- If we change this policy, we'll email you and show a banner in the app
- Effective date shown at the bottom