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Kite and the other ways to use an iPad as a Mac display.

Every option here is good at something. This page says where each one is ahead, including the places Kite isn't.

FeatureKiteSidecarDuet DisplayLuna DisplayOpenDisplayLightspan
Price$9.99 once
Mac app free
Free, built into macOS$39.99–$79.99 a year$89.99 adapterFree, open source€9.99 once
Use it away from homeYes, with TailscaleNo. Within 10 mDuet Air planNo. Same networkNo. Same networkNo. Same network
iPad on a different Apple AccountYesNo. Same account requiredYesYesYesYes
Sign-up neededNone for Kite
Wi-Fi uses a free Tailscale account
Same Apple Account, two-factorDuet account?NoneNone
Ways to connectUSB-C · Wi-Fi · TailscaleWi-Fi · USBWi-Fi · USBWi-Fi · USB · Ethernet · ThunderboltWi-Fi · USBWi-Fi · USB-C
Apple Pencil pressureYes, includedYesPro planWith Astropad Studio (subscription)NoNo
iPad camera as Mac webcamYesNoNoNoNoNo
Encrypted on your Wi-FiYes, new key every session?Yes, per Duet?Not yet, per its privacy pageYes (TLS)

From each product's own website, support pages and App Store listing, checked October 10, 2026. “?” means the product doesn't say. Prices change; check before you buy.