Who’s behind Knotup.
Legal information about the provider of this website and the Knotup app.
Last updated: October 8, 2026Provider
Information according to § 5 DDG (German Digital Services Act). Knotup is offered by:
Ali HusseinWilhelmsstraße 31
34117 Kassel
Germany
Contact
Email: hi@ostrine.com
Web: knotup.app
We don’t offer a phone line. You can reach us quickly by email; we usually reply within 48 hours.
Responsible for content
Responsible according to § 18 (2) MStV:
Ali HusseinWilhelmsstraße 31
34117 Kassel
Germany
Consumer dispute resolution
We are neither willing nor obliged to take part in dispute resolution proceedings before a consumer arbitration board (§ 36 VSBG). If something bothers you, please email us first — that’s usually the fastest way to sort it out.
Liability for content and links
We are responsible for our own content on these pages under the general laws. This website may link to external websites. We have no influence on their content and accept no liability for it; the respective provider is always responsible. If we become aware of any legal violations, we will remove such content or links immediately.
Copyright
The texts, images, design and the Knotup app are protected by copyright. Please ask us before using them. Product names such as Claude, ChatGPT, Slack and Notion are trademarks of their respective owners.