These Terms of Service ("Terms") govern your use of the Punktfunk website at punktfunk.unom.io, the Punktfunk documentation, and the Punktfunk software — the host application and the native client applications (together, the "Software"). The Software and this website are provided by Enrico Bühler, trading as unom, Schroffenstraße 44, 78628 Rottweil, Germany ("we", "us"). You can reach us at buehler@unom.io.

By downloading, installing, or using the Software, or by using this website, you agree to these Terms. If you do not agree, please do not use the Software or the website.

Effective date: 28 June 2026.

1. What Punktfunk is

Punktfunk is self-hosted streaming software. You install a host on your own computer and a client on your own devices; the stream runs directly between your devices, over your own network or the internet. We provide the Software and this website — we do not operate a streaming service on your behalf, and we never receive, relay, or store the audio, video, or input that you stream.

2. Free of charge, no guarantee of availability

Punktfunk is provided free of charge. We do not guarantee that the Software, the downloads, the documentation, or the website are available, error-free, or maintained, and we may change, suspend, or discontinue any of them at any time without notice. There is no entitlement to updates or to continued provision.

3. Licensing of the Software

Punktfunk's source code is open source and is dual-licensed under the MIT License or the Apache License, Version 2.0, at your option, as stated in its repository (see LICENSE-MIT and LICENSE-APACHE) at git.unom.io/unom/punktfunk. Your use, modification, and redistribution of the source code are governed by whichever of those licenses you choose. Pre-built binaries offered here are provided for convenience under the same terms, except for bundled third-party components (for example FFmpeg, SDL, and Opus), which remain subject to their own licenses.

The names "Punktfunk" and "unom", the logos, and the design of this website are not covered by those open-source licenses and remain our property. Third-party names and trademarks are the property of their respective owners.

4. Beta and pre-release software

Some builds are beta or pre-release versions — for example via Apple TestFlight, Google Play testing tracks, or pre-release downloads. These may be unstable, may change or be withdrawn, and may not work as described. You use them at your own risk; the liability provisions in Section 8 remain unaffected.

5. Your responsibilities

You are responsible for how you use the Software. In particular, you agree to:

  • comply with all laws that apply to you;
  • only capture and stream content you are entitled to capture and stream;
  • comply with the terms of the third-party platforms and software you use it with (for example Valve/Steam, Apple, Google, NVIDIA, and the publishers of the games you play);
  • secure your own hosts, devices, networks, pairing PINs, and device trust; and
  • not use the Software to infringe the rights of others, to access systems you are not authorised to access, or for any unlawful purpose.

6. Third-party services and components

Punktfunk interoperates with third-party platforms and protocols — including Valve's Steam, NVIDIA's GameStream protocol (and the independent third-party Moonlight and Artemis clients), Apple, and Google — and includes open-source components licensed by their respective authors. We are not affiliated with, endorsed by, or sponsored by these parties, and their trademarks belong to them. Your use of any third-party service or content remains subject to that third party's own terms.

7. Disclaimer of warranties

To the extent permitted by law, the Software and the website are provided "as is" and "as available", without any warranty of any kind, whether express or implied, including but not limited to fitness for a particular purpose, uninterrupted or error-free operation, or the correction of defects. Mandatory statutory rights — in particular consumer rights that cannot be excluded — remain unaffected.

8. Limitation of liability

Because the Software is provided free of charge, we are liable only for intent and gross negligence, including with respect to the freedom of the Software from defects of quality or title.

Irrespective of the above, we are liable without limitation for damage arising from injury to life, body, or health, under the German Product Liability Act (Produkthaftungsgesetz), and in cases of fraudulently concealed defects.

By way of exception to the first paragraph, where we breach an essential contractual obligation — one whose fulfilment makes the proper performance of the agreement possible in the first place and on whose observance you may regularly rely — we are also liable for simple negligence, but limited to the foreseeable damage typical for this type of agreement. Any further liability is excluded.

9. Links to external sites

This website and the documentation contain links to external websites operated by third parties, over whose content we have no control and for which we accept no responsibility. The respective provider or operator of the linked pages is always responsible for their content.

10. Data protection

Information on how we handle personal data is set out in our Privacy Policy and our Imprint.

11. Changes to these Terms

We may amend these Terms where necessary, for example to reflect changes to the Software or to the legal situation. The current version is always published on this page with its effective date, and we will announce material changes in an appropriate manner (for example on this page or in the application). If you do not agree with a change, please stop using the Software and the website; your rights under the open-source licenses for the source code remain unaffected.

12. Final provisions

These Terms and your use of the Software are governed by the law of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods. If you are a consumer, this choice of law does not deprive you of the protection afforded by the mandatory provisions of the law of your country of habitual residence.

Should any provision of these Terms be or become invalid, the validity of the remaining provisions remains unaffected. To the extent legally permissible, the place of jurisdiction for disputes with merchants, legal entities under public law, or special funds under public law is Rottweil, Germany.

We are neither willing nor obliged to participate in dispute-resolution proceedings before a consumer arbitration board (§ 36 of the German Consumer Dispute Resolution Act, VSBG).

These Terms are provided in German and English. In the event of discrepancies between the versions, the German version prevails; the English version is for information only.

13. Contact

Enrico Bühler (unom), Schroffenstraße 44, 78628 Rottweil, Germany. Email: buehler@unom.io.