Klusto (Chinese name: 归流; "the app", "we", "us") is a private client for self-hosted services. This page explains what data the app handles and how. The short version: we do not collect anything.
The only information the app asks for is what you need to connect to your own servers:
https://music.example.com)These credentials are stored locally in the iOS Keychain. They never leave your device except in HTTPS requests to the server you point the app at. We do not see them, do not log them, and do not transmit them to any third party.
The app does not collect, store, transmit, sell, or share:
The app only makes network requests to servers you configure. Communication is HTTPS / TLS. There is no analytics endpoint, no advertising network, no error reporting service, and no third-party SDK phoning home. Network failures are reported to you in-app, not to us.
The app is a client for third-party services you self-host (Navidrome / Subsonic, Emby, Memos, Firefly III, and others in the future). We have no relationship with these services. Your data is governed by their terms and your own hosting choices — not by this privacy policy.
Optional subscriptions and a one-time lifetime unlock are processed by Apple using your Apple ID. The app receives only a transaction receipt to verify entitlement; we do not see your Apple ID, payment method, or billing address. Apple's privacy policy applies to that data: apple.com/legal/privacy.
The app is suitable for all ages. It does not knowingly collect any information from children.
Because we collect nothing, there is no user data to export, correct, or delete. You can erase all app data at any time by deleting the app from your device — this wipes the Keychain entries and all local caches.
If we ever change this policy, we will update the "Last updated" date above and, for material changes, prompt you in-app on the next launch.
Questions, concerns, or requests? Open an issue on our support page: support.html.