← Back to Katoptron

Legal notice

Published pursuant to article 6 III of French Act No. 2004-575 of 21 June 2004 on confidence in the digital economy. This is a translation provided for convenience; the French version is the only binding text.

Site publisher

Publisher
Cyril GOHEL, sole trader (micro-entrepreneur)
SIREN
105 305 783
SIRET
105 305 783 00018
APE code
5829C — Application software publishing
Registered address
2 rue de l'Orée, 14930 Éterville, France
Contact
gohelcyril@gmail.com
Publication director
Cyril GOHEL
VAT
VAT not applicable, article 293 B of the French General Tax Code
As of 1 September 2026, the exemption wording becomes “VAT not applicable, art. L. 223 et seq. of the CIBS”. The former wording remains acceptable until 31 December 2027.

Hosting

Website host
Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, United States — vercel.com
Account data host
Supabase — infrastructure located within the European Union (Ireland)
Payment provider
Stripe Payments Europe, Ltd., 1 Grand Canal Street Lower, Dublin 2, Ireland

Nature of the service

Katoptron is an educational simulator of executive efficiency. It is not a medical device within the meaning of Regulation (EU) 2017/745: it makes no diagnosis, screens for and monitors no condition, and guides no therapeutic decision. The values displayed are indicative and not measured.

Intellectual property

All content on this site — text, computational model, interface, visual identity — is protected by copyright. Any reproduction or representation, in whole or in part, without prior written permission is prohibited.

Personal data

Health declarations entered by the user never leave their device: all computation is performed locally in the browser. Full processing details are set out in the privacy policy.

Consumer mediation

Pursuant to article L612-1 of the French Consumer Code, the designated mediator is CM2C — Centre de la Médiation de la Consommation de Conciliateurs de Justice, 14 rue Saint Jean, 75017 Paris — www.cm2c.net. Referral is free of charge for the consumer and requires a prior written complaint to the seller that has gone without a satisfactory answer for two months. Details in article 10 of the terms of sale.