Terms of use
Updated 2026-10-06
The deal, in plain sentences. Lagless is free and open source under the MIT licence. Use it at your own risk: it changes an undocumented macOS setting, and you can undo the change at any time. We don't collect your data.
1. Who we are
Lagless is an independent app made by Charles Reiss. Contact: hello@lagless.app.
2. The licence
The Lagless app and its source code are licensed under the MIT Licence. You may use, copy, modify and distribute them under that licence. Where these terms and the MIT Licence differ about the software, the MIT Licence governs.
3. What Lagless does to your Mac
Lagless changes one undocumented macOS preference, audioLatencyMs, and restarts the macOS AirPlay process. This setting isn't documented or supported by Apple, and a future macOS update may change or ignore it. Each change briefly disconnects your AirPlay speaker. Turning Lagless off, or choosing Uninstall Lagless…, restores Apple's default.
4. Acceptable use
Don't use Lagless or this website to break the law, to interfere with other people's devices or networks, or to misrepresent who made Lagless.
5. What we promise, and what we don't
We build Lagless carefully and test it on real hardware, but it's provided “as is”, without warranties of any kind, as the MIT Licence says. We don't promise that it will work with every Mac, macOS version or speaker, or that audio will never stutter at low delays.
Nothing in these terms limits liability that can't be limited by law. That includes liability for death or personal injury caused by negligence, for fraud, or your statutory rights as a consumer. Otherwise, to the extent the law allows, we aren't liable for any loss arising from your use of Lagless or this website.
6. Trademarks
Lagless is an independent app, not affiliated with, endorsed by or sponsored by Apple Inc. AirPlay, HomePod, Mac and macOS are trademarks of Apple Inc. Sonos is a trademark of Sonos, Inc. Other names belong to their owners and are used only to describe compatibility.
7. Third-party material
Lagless and this website include openly licensed material from others. It's listed, with its licences, on the Licences page.
8. Privacy
See the Privacy policy. In short: the app collects nothing.
9. Changes
We may update these terms, and we'll change the date at the top when we do. The version in force when you use Lagless applies.
10. Governing law
These terms are governed by the law of England and Wales, and the courts of England and Wales have jurisdiction. If you live elsewhere in the UK or in the EU, you keep any protection of your local consumer law and can bring a claim in your local courts.