Terms of use

A prototype

Lumo is a student prototype built at HackPrinceton Fall 2026. It is provided as is, without warranty, and may change or stop working at any time.

Corrections can be wrong

Corrections and replies are written by an AI model and checked by code, but they can still be wrong. Treat them as practice feedback, not as an authority on Spanish.

Using Lumo

• Switch Lumo on only for sites you are allowed to read.
• Do not use the tutor to submit anything unlawful or anyone else's personal information.
• Speech and text you send are processed by the services named in the privacy policy.

Word list

Word frequencies come from FrequencyWords by Hermit Dave, derived from OpenSubtitles 2018, licensed CC-BY-SA 4.0.

Your data

What Lumo stores and how to delete it is set out in the privacy policy.