One keyboard.Every Mac.

No. Continuo is commercial proprietary software. A buildable security package containing the pairing, identity-pinning, and secure connection-admission code consumed by the product is prepared for publication. It also contains a staged and tested generic SessionCrypto implementation, which is not the shipped input-encryption implementation. The motion engine, trackpad code, and Pro features remain proprietary.

Often you should not. Deskflow is genuinely good, actively developed, and it covers Windows and Linux, which Continuo does not. The difference is what happens on a Mac. Deskflow's own README says it does not use an Apple certificate for notarization, so macOS reports it as damaged until you clear the quarantine flag yourself - even its Homebrew cask runs xattr -c on the app after installing it - and handling for the macOS Input Monitoring permission has been an open issue since March 2025. Continuo is one macOS app, signed and notarized, and every part of it is written for that one platform. If a Terminal step and some permission wrangling do not bother you, use Deskflow and keep your $29.

Not yet, byte for byte. The security source is prepared for publication. Release-to-source mapping is planned; when the package is public and mapping ships, each signed release will record the security-source commit in the whitepaper. The generic SessionCrypto implementation remains staged and is not the shipped input-encryption implementation.

No. Your Macs have to be on the same Wi-Fi or plugged into the same network. Keyboard, mouse, clipboard, and file content travel only on the authenticated peer connection between paired Macs. None of it is sent to an Internet service.

No. This is not screen sharing. Each Mac keeps showing its own screen. What moves between them is your keyboard, mouse, clipboard and files.

No. Different Apple IDs are fine, and so is no Apple ID at all. They recognise each other directly, without going through Apple.

Yes, in both directions. Each Mac verifies it is talking to the paired machine, not an impostor. There is no switch to turn encryption off.

No telemetry and no analytics in the app. There is no account and no cloud relay for your input. Diagnostic logs stay on your Mac with keystroke content stripped out. The Pro trial sends a one-way device hash. Licence activation sends that hash plus a device name, so seats are listed by something you recognise; see the privacy policy. Purchases go through Polar.

Free: two Macs, encrypted keyboard and mouse, Pair with three words, layout, QuickJump, Auto-reconnect, menu bar status, clipboard up to 1 MB, and one file at a time. Pro: 5 Macs included on one licence, trackpad gestures, Copy on Select, Wake-on-LAN and Wake them automatically, Mesh Sleep Sync, folders and batch files, Quick Share folder mounting (both Macs need Pro), clipboard up to 32 MB, keyboard on a locked Mac. Trackpad gestures and the locked Mac need Pro on both Macs. Pairing a third Mac is itself a Pro feature; licence activations are capped separately, per Mac.

Only if you want new builds. Your purchase includes one year of new builds, which normally covers the next macOS release. After that year, the app keeps running with every Pro feature, permanently. Optional update feed access is $19/year if you want it. That is not a subscription, and your Pro licence does not expire.

Any Mac on macOS 15 or newer, as long as they are on the same network.

No, and not one I am planning. Continuo is one macOS app: it uses macOS event taps for input, macOS permission prompts, and an NFS mount for Quick Share, so a Windows version would be a new product rather than a port. If there is a PC on your desk, Deskflow is free and covers Windows and Linux, and Synergy sells a paid version that does too. Continuo is for the desk where every machine is a Mac.