Sill – free/open source app to stream any window from you Mac onto iPhone/iPad

Any window from your Mac, on your iPhone and iPad.

Both free. Sill for Mac needs Apple silicon and macOS 14 or later; the app needs iOS 17 or iPadOS 17 or later.

Sill shows a window from your Mac, or its whole desktop, on your iPhone or iPad, and lets you use it with touch, a keyboard or Apple Pencil. It streams straight from your Mac to your device over your own network, so there is no account to create and no server in between. You pair each device once, and every connection is encrypted. Both parts are free: the Sill app for iPhone and iPad, and Sill for Mac.

No shared network? Connect your iPhone or iPad to your Mac with a USB cable, or turn on Direct Wireless Connection in Sill on your Mac.

On iPhone Duo, Sill follows the fold: open flat on its side, your Mac fills the inner display; half open like a laptop, the picture is above the fold with a trackpad and keys below; closed, Sill runs on the cover display.

With Remote Access on, Sill reaches your Mac through your own VPN, such as Tailscale, or through a port you forward on your router. An iPhone or iPad you paired learns how the next time it connects to your Mac at home with Remote Access on; for one that never connected at home, choose Pair iPhone or iPad… in the Sill menu on your Mac, and tap Add a Mac… on the device. Away from home, Sill starts at a quality a slower connection can carry, and when you get home, the session moves to your network by itself.

Sill is free and open source. It has no ads, no tracking and no account, and it never sends anything to its developer. The privacy policy has the details.

Sill is free and stays free. If it earns a place on your desk, a tip helps pay for the developer account and the coffee. Tip on GitHub Sponsors. Tips unlock nothing; every feature is for everyone.