Eufy Smart Lock C220 vs Nuki Smart Lock Ultra

The Nuki Smart Lock Ultra wins overall. It carries the highest owner rating in Nuki's range, supports Apple HomeKit, Google Home, Alexa, SmartThings, Home Assistant and Matter with built-in Wi-Fi, and adds a 2-year warranty and hands-free auto-unlock. The Eufy Smart Lock C220 is the value alternative, with built-in fingerprint entry, anti-peep codes, IP53 weather resistance and a lower price.

The Nuki Smart Lock Ultra is a premium retrofit for European euro-cylinder doors with the widest platform support, but its keypad and fingerprint reader are separate accessories. The Eufy Smart Lock C220 is a full US-style deadbolt with a built-in fingerprint reader and keypad, limited to Google Home, Alexa and Home Assistant.

It depends on your priorities. The Nuki Smart Lock Ultra justifies its premium with faster operation, a refined build, the broadest integrations and Matter over Thread, plus the top owner rating in its line. If you mainly want reliable fingerprint entry on a US deadbolt without spending as much, the Eufy Smart Lock C220 delivers that for far less.

The Eufy Smart Lock C220 is rated around 8 months on 8 replaceable AA batteries. The Nuki Smart Lock Ultra uses a rechargeable built-in battery rated around 6 months per charge, so you recharge it rather than swapping cells.

Buy the Eufy Smart Lock C220 if you have a standard US deadbolt and want an affordable, hub-free lock with built-in fingerprint entry, anti-peep passcodes and IP53 weather resistance. The Nuki Smart Lock Ultra is for European doors and buyers who want the flagship experience with Apple HomeKit, Matter and the broadest smart-home support.