Cookies & Local Storage
Last updated: 7 October 2026
Band OS does not use tracking, analytics or advertising cookies. It stores a small amount of data in your browser only to keep you signed in and to remember settings you have chosen.
What is stored in your browser
| Item | Purpose | Type | How long |
|---|---|---|---|
| Firebase sign-in state (browser database “firebaseLocalStorageDb”) | Keeps you signed in with Firebase Authentication | Strictly necessary | Until you sign out or the session ends |
| bandos_session_start | Times the automatic 4-hour sign-out for security | Strictly necessary | Until you sign out |
| bandos_active_band | Remembers which band you are working in | Strictly necessary | Until you sign out |
| theme | Your light / dark choice | Setting you chose | Until you clear browser data |
| sidebar-collapsed | Whether you collapsed the side menu | Setting you chose | Until you clear browser data |
| present-* (language, font, font size) | Your preferences in Present mode | Setting you chose | Until you clear browser data |
This is browser “local storage” and similar technology rather than classic cookies, and it is not used to track you, build a profile or show advertising.
Why there is no cookie banner
The law (Art. 5(3) of the ePrivacy Directive and its national implementations, such as § 25 TDDDG in Germany) requires consent only for storage that is not strictly necessary. Everything above is either strictly necessary to provide the service you asked for, or a setting you explicitly chose. If we ever add analytics or marketing tools, we will ask for your consent first and update this page.
Third parties that may set their own cookies
- Google: when you choose “Sign in with Google”, the Google pop-up is operated by Google under its own privacy policy and may set its own cookies.
- YouTube: a band’s public page can embed videos using YouTube’s privacy-enhanced mode (youtube-nocookie.com), which Google serves directly.
- Google Docs / Drive previews: shown when a band links a document as a song attachment.
- Google Fonts: only if you pick extra lyric languages or fonts in your display settings.
We have no control over cookies set by these providers; see their privacy policies. More detail is in our Privacy Policy.
Managing and deleting stored data
You can clear this data any time in your browser settings (“clear site data”), you will be signed out and your preferences reset. Questions: musik.espresso@gmail.com.