Privacy policy

Who we are

Lumo is a student project built at HackPrinceton Fall 2026. It runs as a single demo account. There are no user accounts, ads or tracking cookies.

What Lumo stores

• Spanish words you look up or practise, with their learning state and review dates.
• A short activity log: which word you hovered, when you read an article, and whether you used a word correctly.
• The title and website of articles you read on sites you switched on. Never the page text or the full address.
• Tutor conversations: the text of what you said, the corrections, and the tutor's replies.
• Your settings: level, swap intensity, the sites you allowed or paused.

What Lumo never collects

• Anything on sites you have not switched on.
• Email, chat, banking, health, school and work tools, or login and form pages, even if you allow them.
• What you type on other websites, or your browsing history.

Services that process your data

• Anthropic (Claude) reads your transcripts to correct them and to write the tutor's replies.
• ElevenLabs turns your speech into text and speaks the tutor's replies. Your voice is sent to it for that only.
• Supabase hosts the database that holds the data listed above.

Each service handles data under its own terms.

See and delete your data

Every stored item is listed on What Lumo knows. You can delete any item, or everything at once. Deleting is permanent.