Updated October 30, 2026
Privacy
Mentis is a native Mac app for personal knowledge work. This page describes the app and the sync service at pxsvpn.xyz.
Your writing
Your thoughts and workspaces are saved on your Mac. When you connect sync, your library—including its content, tasks, attachments, connections, workspace layout, and changes—is also stored on the Mentis server so your connected Macs can receive it. This service runs on a Timeweb VPS.
Personal History
Starting with version 1.4.0, Mentis automatically records deliberate opens and changes within the app. History stores bounded titles and task labels, actions, timestamps, source identifiers and workspace context. It does not record activity in other apps or keep full document versions.
History is saved locally and, when signed in, on the Mentis server for syncing between your updated Macs. It keeps the last year of activity. Settings → Library lets you stop recording, exclude opened items, or clear History without deleting your writing. Offline Macs reconcile these choices when they reconnect.
Clearing or expiring activity removes its historical labels from the active record. Causal deletion metadata may remain to prevent old copies from returning. Existing backups retain their own recovery policy, as described below.
Google sign-in
Google sign-in verifies who you are. The authentication service receives your Google account identifier, email address, verification status, and basic profile information such as your name and profile image. It uses this information to connect you to your Mentis library. Mentis does not request access to your Gmail messages, Google Drive files, or contacts.
Google processes sign-in under its own privacy policy. Mentis uses the self-hosted Better Auth library to handle authentication. Temporary sign-in cookies are used during the browser flow; they are not advertising cookies.
Sync and security
Each connected Mac has its own revocable access credential, stored in macOS Keychain. The server stores a hash of that credential. Connections to the service use HTTPS. Synced writing is not end-to-end encrypted: the server operator can access the data stored on the server.
The service stores your account identity, device names and registration times, and the data needed to synchronize your library. Network addresses are processed to operate the service and limit abusive requests. Application request bodies and writing are not included in routine API logs.
AI features
If you configure AI features, the app sends relevant writing and queries directly to your chosen model provider for processing. The provider handles that information under its own terms and privacy policy. Your AI API key stays in this Mac’s Keychain and is not synchronized through the Mentis server. Google sign-in does not enable AI processing by itself.
Keeping and removing data
Signing out stops this Mac’s sync access and keeps its local writing. It does not delete your server library. Removing a thought in the app updates your library, but sync records can retain prior changes and deletion markers. Server backups currently rotate after 14 days; a backup may contain earlier data until it expires.
For questions about your account or server data removal, contact the project maintainer through the maintainer’s GitHub profile. Do not include private writing, credentials, or personal information in a public issue.
Downloads and updates
The app checks the Mentis server for new versions automatically; you can turn these checks off in Settings. Downloads and update checks process your IP address and ordinary request information, including the app’s user agent. They do not send your writing, account credentials, or AI API key. Sparkle system profiling is disabled. You choose when to install an update.
This website
These information pages use no advertising, analytics scripts, or tracking cookies. Links to other services are governed by those services’ privacy policies. Self-hosted Mentis installations may have different operators, backup schedules, and email-delivery providers.