Privacy Policy

Last updated: September 1, 2026

DualMac (the iPad app) and DualMac Companion (the Mac app) are published by Marius Labs. This policy describes what data the apps handle and where it goes. The short version: we run no servers, we collect nothing, and your data never reaches us.

1. No account, no backend, no tracking

• DualMac requires no account and has no cloud backend operated by Marius Labs.
• The apps contain no advertising, no analytics and no tracking SDKs.
• We have no access to your Macs, your files, your screen content, your credentials or your agent sessions.

2. What stays on your devices

• Machine list and settings are stored locally on your iPad.
• Credentials (VNC passwords, pairing secrets) are stored in the device Keychain.
• Screen streams, files and clipboard content travel directly between your iPad and your Mac, over your local network or your own private network (for example a Tailscale tailnet). They are never routed through Marius Labs.

3. Agents (Claude Code & Codex)

DualMac can supervise the Claude Code and Codex command-line tools that you have installed and signed into on your own Mac. When you use agent features:

• prompts, responses, file paths and code context are processed on your Mac by those tools, under your OpenAI and/or Anthropic accounts, and may be transmitted to those providers by the CLIs according to their own terms and retention policies;
• DualMac asks for your explicit, revocable consent before the first time content is sent to an AI provider;
• sharing and controlling agent sessions from the iPad are separate opt-ins, disabled by default, each confirmed on the Mac with the exact list of shared data.

Please refer to the privacy policies of Anthropic and OpenAI for how they process content submitted through their tools.

4. Network connections the apps make

• DualMac (iPad) connects only to the Macs you add.
• DualMac Companion (Mac) accepts connections only from paired iPads on your private network, and periodically checks dualmac.app for signed software updates (Sparkle). The update check transmits no personal data.

5. Data deletion

Since nothing is stored on our side, deleting your data is entirely in your hands: delete the DualMac app from your iPad (this removes local data and Keychain entries associated with the app) and move DualMac Companion to the Trash on your Mac. There is nothing to request from us — we hold nothing.

6. Children

DualMac is a developer utility, not directed at children.

7. Changes

If this policy changes, the new version will be published at dualmac.app/privacy with an updated date.

8. Contact

Marius Labs — [email protected]