About

Shows version numbers for the App, Core, Service, and CLI components (colored to reflect whether the service is currently healthy), a short description of Lertaro, and links to the project homepage and the online user guide.

Data folders

Two more links, right below those, open the folders Lertaro reads and writes its own configuration from — each shows the actual path as the clickable link text, creating the folder first if it doesn't exist yet:

• User Data Folder — the per-user folder holding user-settings.json. Every time settings are saved, the previous file is rotated into user-settings.json.bak.1 (shifting any older backups down, up to .bak.5) before the new one is written, so a bad edit or a crash mid-save always leaves a recent copy to restore from.
• Machine Data Folder — the shared, machine-wide folder used by the background service (machine-settings.json, index caches, and service-side logs).

The installed build uses %LocalAppData%\Lertaro and %ProgramData%\Lertaro. A portable build uses Data\Users\<SID hash> and Data\Machine beside the application; if that portable Data folder has not been created yet, existing installed data is reused for compatibility. See Portable data for the precedence rule.

Checking for updates

• Check Update button — queries for a newer release; the button's own label reflects progress ("Checking...", then either "up to date" or the new version number found).
• If a non-administrator account can't stop the background service to install an update in place, a warning banner explains this and points you to the manual download page instead.
• Once a new version is found:
  • Silent Auto-Update — downloads and installs in the background, showing a progress bar, then restarts Lertaro automatically.
  • Go to Download Page — opens the GitHub release page in your browser for a manual install.

This mirrors the Auto check for updates / Auto silent update checkboxes under General → System — those control whether this check happens automatically on startup; this page lets you trigger it manually at any time.