Legal notice
Operator
Karandeniya Mahadurage D Premathilaka
Known as Janaka Premathilaka
Private individual — not a registered company.
Address
Fadenstrasse 19
6300 Zug
Switzerland
Contact
nüchtern is a free, independently developed fasting-tracker web app. All fasting, hydration and history data is stored only on your own device — nothing is collected, transmitted, or stored by the operator. See the Privacy policy for full details, including the optional anonymous analytics tag.
© 2026 Karandeniya Mahadurage D Premathilaka (Janaka Premathilaka). All rights reserved. The nüchtern name, design and source code may not be copied, redistributed, or reused without prior written permission.
For the purchase terms covering nüchtern Pro (pricing, delivery, refunds), see the Terms of service.
Intellectual property
All content, design, source code and copy on this site are protected by copyright and are made available solely for use of the nüchtern app as intended.
No permission is granted to copy, scrape, reverse-engineer, republish, rehost, resell, or create derivative works from this site or app, in whole or in part, by any automated or manual means, without prior written consent from the operator.
To report unauthorized copies or request permission, contact [email protected].