Legal
Legal notice
Effective date: 16 September 2026
Service provider
Retree, available at https://retr.ee, is operated by:
Dawid Zbiński
ul. gen. Władysława Sikorskiego 15/15
34-400 Nowy Targ
Poland
- Legal form: sole proprietorship (jednoosobowa działalność gospodarcza), registered in the Central Register and Information on Economic Activity (CEIDG) of the Republic of Poland, kept by the minister responsible for the economy
- Tax identification number (NIP): 7352921429
- Statistical number (REGON): 528114982
- EU VAT number: PL7352921429
Contact
E-mail: dawid@zbinski.dev
We correspond in English and Polish. Complaints are handled as described in section 13 of the Terms of Service; requests concerning personal data as described in section 10 of the Privacy Policy.
Copyright
Retree — its software, design, name, logo, texts, graphics and documentation — is the work of Dawid Zbiński and is protected by copyright and related rights. All rights reserved. No part of the Service may be reproduced, distributed, modified or used to provide a competing service without prior written permission, except as expressly allowed by the Terms of Service or by mandatory law.
Content that participants enter into a retro remains the property of its authors, who license it to us only to the extent needed to run the Service (section 5 of the Terms of Service).
Trademarks
"Retree" and the Retree logo are marks of Dawid Zbiński. All other product and company names mentioned in the Service, including PostHog, are trademarks of their respective owners and are used only to identify those products and companies.
Third-party notices
The Service is built with open-source software. The components below are used under their own licences, which remain unaffected by the Terms of Service.
| Component | Author | Licence |
|---|---|---|
| Bricolage Grotesque (typeface) | Mathieu Triay (ateliertriay) | SIL Open Font License 1.1 |
| Inter (typeface) | Rasmus Andersson | SIL Open Font License 1.1 |
| Lucide (icons) | Lucide Contributors | ISC |
| React and React DOM | Meta Platforms, Inc. and affiliates | MIT |
| Radix UI and shadcn/ui | WorkOS; shadcn | MIT |
| Tailwind CSS | Tailwind Labs Inc. | MIT |
| Pragmatic drag and drop | Atlassian Pty Ltd | Apache License 2.0 |
| TanStack Query | Tanner Linsley | MIT |
| Zustand | Poimandres | MIT |
| react-markdown, remark, rehype | Titus Wormer | MIT |
| Go and the Fiber web framework | The Go Authors; Fiber contributors | BSD-3-Clause; MIT |
| PostgreSQL | The PostgreSQL Global Development Group | PostgreSQL License |
| nginx | F5, Inc. | BSD-2-Clause |
Copies of these licences are available from their respective projects.
Points of contact under the Digital Services Act
Under Regulation (EU) 2022/2065 (the Digital Services Act), our single point of contact for the authorities of the Member States, the European Commission and the European Board for Digital Services, and our point of contact for the recipients of the Service, is:
Dawid Zbiński, e-mail: dawid@zbinski.dev
Communication is possible in English and Polish. Notices about illegal content are handled as described in section 7 of the Terms of Service.