Terms of Service

Last updated: 2026-08-22

1. The service

jeden.day is a free, personal habit tracker operated by Michael von Bothmer, Aachen, Germany ("the operator"). It lets you record habits and daily entries and view your own progress. It is provided as a personal project, free of charge and without any guaranteed service level.

2. Your account

Accounts are identified by email address and signed in passwordlessly via emailed links or passkeys. You are responsible for access to your email inbox and your devices. You must be at least 16 years old to use the service.

3. Acceptable use

Use the service only for its intended purpose — tracking your own habits. In particular, do not attempt to access other users' data, disrupt or overload the service, create accounts in bulk or by automated means, or use the sign-in mail flow to send unsolicited email to third parties.

4. Your data

Your habit data remains yours. You can export it at any time from the account menu and delete it — or the entire account — yourself. How personal data is handled is described in the Privacy Policy.

5. Availability and warranty

The service is provided "as is". The operator does not warrant uninterrupted availability, freedom from errors, or the preservation of data, and may change or discontinue the service; if it is discontinued, registered users will be notified by email with reasonable notice to export their data.

6. Liability

The operator is liable without limitation for intent and gross negligence and under mandatory statutory liability (including injury to life, body, or health). For slight negligence, liability exists only for the breach of essential contractual obligations and is limited to the foreseeable damage typical for this kind of free service. Any further liability is excluded.

7. Termination

You may stop using the service and delete your account at any time in the app. The operator may suspend or terminate accounts that violate these terms, and may do so without notice where the violation endangers the service or other users.

8. Changes to these terms

Material changes to these terms will be announced to registered users by email before they take effect. If you continue to use the service afterwards, the changed terms apply.

9. Final provisions

German law applies. Should individual provisions of these terms be invalid, the remainder stays in effect.