Contact

Last updated 2026-07-17

Get in touch

The easiest way to reach Kayu is by email:

app.kayu@gmail.com

One address for everything: questions about the app, feedback, reporting a data error, or requests about your personal data. We read every message.

Who publishes Kayu

• Publisher: Lucas Tostee, sole proprietor (auto-entrepreneur / micro-entreprise regime)
• Address: 66 rue des Remparts, 33000 Bordeaux, France
• SIRET: 830 928 412 00014

Full details are in the Legal notice.

Your personal data

To exercise your rights (access, rectification, erasure, objection) or for any privacy question, write to app.kayu@gmail.com. The Privacy Policy sets out the data processed, the legal bases, and how to lodge a complaint with the CNIL.

Reporting a medication error

Kayu aggregates public data from ANSM (France) and Health Canada. If you spot information that looks inaccurate, report it to app.kayu@gmail.com — but remember that Kayu is an information tool and is not a substitute for the advice of a pharmacist or doctor.