Nuki Smart Lock Go vs Nuki Smart Lock Ultra

The Nuki Smart Lock Ultra, on the strongest owner rating in the family and a built-in rechargeable battery. The Nuki Smart Lock Go costs considerably less and uses replaceable AA batteries, matching it on the core features.

Power and price. The Nuki Smart Lock Ultra runs on a built-in rechargeable battery rated around 6 months, while the Nuki Smart Lock Go uses 4 AA cells with backup and costs much less.

Yes. Both the Nuki Smart Lock Go and the Nuki Smart Lock Ultra support Matter, and both can use Thread where a Thread border router is available.

Yes, both support auto-unlock by geolocation, so the door opens as you reach it, and both send low battery alerts before power becomes a problem.

Yes. Both mount over an existing European cylinder from the inside in minutes, with no drilling and no change to the exterior, so existing keys continue to work.

Buyers who want Nuki's retrofit convenience for the lowest price and prefer AA batteries they can swap in seconds rather than recharging a built-in pack.

Buyers who want the best received lock in the range with a rechargeable battery lasting around 6 months, and are happy to pay the premium over the Go.