Privacy Policy
Last updated: October 9, 2026
Tideline is an on-device macOS application manager and uninstaller developed by Sunsato. Tideline does not collect, transmit, sell, or share personal data.
Data processed on your Mac
Tideline reads application metadata and filesystem information to show installed
applications and potential related files. When you approve a cleanup, Tideline asks macOS
to move the selected items to Trash. Unavailable simulators are the one exception: at your
explicit request, Xcode's own simctl deletes them permanently. This
processing occurs locally on your Mac.
Tideline stores the following local application state under its Application Support directory:
- Folder-access bookmarks that represent folders you explicitly granted Tideline permission to scan.
- Cleanup history containing application names, bundle identifiers, selected paths, sizes, and cleanup dates.
This information is not transmitted by Tideline. You can revoke saved folder access from the Folder Access page and remove Tideline's local Application Support data through Finder.
macOS permissions
Folder access is requested through the standard macOS folder picker. Tideline cannot grant itself Full Disk Access or bypass macOS privacy controls. A folder grant expands scan visibility only; it does not make an otherwise unsafe path removable.
If you explicitly select the privacy-reset option during uninstall, Tideline asks the macOS
tccutil service to reset saved privacy decisions for the verified application
bundle identifiers shown in the review. Tideline does not read or modify the protected TCC
database.
When you explicitly uninstall a root-owned or Mac App Store app bundle, Tideline may invoke the standard macOS administrator authorization prompt to move that bundle to your user Trash. Tideline does not use that authorization to remove related All Users files or background services.
Network access and third parties
Tideline contains no analytics, advertising, tracking, account, or cloud-sync service. It does not include third-party SDKs that collect data. The only network request it can make is the optional update check described below.
Software updates
The Mac App Store version is updated by the App Store. The version downloaded from tideline.sunsato.com includes the open-source Sparkle updater. It checks for updates only after you allow it, and you can turn checking off in Settings → Updates. A check downloads a public update feed from tideline.sunsato.com; the request carries the Tideline and macOS version numbers and nothing about your files. Every update is verified with Sunsato's signature before it installs.
Apple Intelligence explanations
On macOS 26 or later with Apple Intelligence, you can ask Tideline to describe an
unfamiliar file or folder. The request goes to the language model on your Mac, never to a
server, and contains only the item's path inside your home folder (with your account name
replaced by ~), its kind, and its size. The answer is shown to you and never
changes what Tideline selects or removes.
Changes and contact
Material changes to this policy will be published with the policy's updated date. Privacy questions may be submitted through Sunsato.