Door Locks · Head to head

Nuki Smart Lock Ultra vs ULTRALOQ Bolt SE

Full Smart Door Locks comparison in 2026

Updated October 2026
Data from Amazon and official Nuki and ULTRALOQ sites.
2026 verdict
One is a premium retrofit that leans on its build and refinement, the other a workhorse deadbolt that keeps the keypad in the box, and the ULTRALOQ Bolt SE takes this smart lock matchup on battery life, built-in entry and price.
ULTRALOQ Bolt SE
Winner
ULTRALOQ Bolt SE
$89.99$99.9910% OFF

Last recorded price

Buy on Amazon USA
The ULTRALOQ Bolt SE bundles a fingerprint reader, a keypad for up to 50 codes and two emergency keys with built-in Wi-Fi and Matter over Thread, and its four AA batteries are rated at 18 months. The Nuki Smart Lock Ultra is the better-built machine and the better reviewed of the two, a compact European retrofit with built-in Wi-Fi, a rechargeable battery rated around six months and a two-year warranty, but its keypad and fingerprint reader are sold separately and passcode entry is an add-on. Both work with Apple Home, Alexa, Google Home, SmartThings and Home Assistant. Buy the ULTRALOQ Bolt SE for built-in entry and a longer battery span, and the Nuki Smart Lock Ultra for the most refined retrofit on a euro cylinder.
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FeatureNuki Smart Lock UltraULTRALOQ Bolt SEWinner
Rating4.54.3Nuki Smart Lock Ultra
Warranty2 years18 monthsNuki Smart Lock Ultra
Battery Life6 months18 monthsULTRALOQ Bolt SE
One-Time PasswordKeypad requiredYESULTRALOQ Bolt SE
Periodic PasswordKeypad requiredYESULTRALOQ Bolt SE
Connectivity2.4 GHz WiFi, Bluetooth, Thread Protocol2.4 GHz WiFi, Bluetooth, Thread ProtocolTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, Physical KeyTie
Emergency FingerprintNONOTie
DoorbellNONOTie

What the differences mean

Built-in entry

The ULTRALOQ Bolt SE has a fingerprint reader and a keypad on the door, so codes and prints work out of the box. The Nuki Smart Lock Ultra relies on Bluetooth, hands-free auto-unlock, the app and a physical key, with its Keypad and fingerprint reader sold as accessories.

Battery

The ULTRALOQ Bolt SE is rated at 18 months on four AA batteries and has no backup. The Nuki Smart Lock Ultra uses a rechargeable built-in battery rated around six months, which is more convenient to top up but shorter between charges.

Warranty and build

The Nuki Smart Lock Ultra carries a two-year warranty and is called the most refined, premium lock in Nuki's range. The ULTRALOQ Bolt SE is covered for 18 months on its electronics, though its mechanical cover is lifetime.

Door compatibility

The Nuki Smart Lock Ultra is a retrofit for European euro-cylinder doors, mounting over the existing cylinder without drilling. The ULTRALOQ Bolt SE is a full deadbolt replacement, so the pair do not fit the same doors.

Reliability

The ULTRALOQ Bolt SE has a settled record in owner reports and BHMA certification. The Nuki Smart Lock Ultra is newer and drawn from Nuki's best-reviewed line, but both brands have seen occasional motor or hardware faults, with Nuki's support praised for replacing units quickly.

Which one to buy if

Nuki

Nuki Smart Lock Ultra

Prime exclusive deal

Last recorded price

Currently unavailable on Amazon USA
See on Amazon USA
  • + Rating: 4.5
  • + Warranty: 2 years
  • - Battery Life: 6 months vs 18 months
  • - One-Time Password: Keypad required vs YES
Winner
ULTRALOQ

ULTRALOQ Bolt SE

10% OFF
Prime exclusive deal
$89.99
$99.99

Last recorded price

Buy on Amazon USA
  • + Battery Life: 18 months
  • + One-Time Password: YES
  • + Periodic Password: YES
  • - Rating: 4.3 vs 4.5
  • - Warranty: 18 months vs 2 years

What owners say

Nuki Smart Lock Ultra owners, many of them long-time Nuki users, call it a real upgrade: faster response, a more premium feel and more comfortable operation than earlier models, with a guided app that makes an hour-long install feel simple and built-in Wi-Fi that means remote access works without add-ons. They praise the build, the design and the support, and mostly complain about the price and a fiddly cylinder-length setting. ULTRALOQ Bolt SE owners are more value-minded, citing a ten-minute physical install, no monthly fees, and customer service they describe as excellent. Their warnings are a frustrating Wi-Fi and Matter setup, a jam when the bolt did not fully extend, and batteries that some say fall short of the 18-month rating, alongside high praise for the fingerprint reader and shareable codes.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Nuki Smart Lock Ultra
  • ULTRALOQ Bolt SE

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Frequently Asked Questions

Which is better overall: Nuki Smart Lock Ultra or ULTRALOQ Bolt SE?

The ULTRALOQ Bolt SE for built-in fingerprint and keypad entry at a lower price. The Nuki Smart Lock Ultra is the more premium, better reviewed retrofit if you prefer the Nuki ecosystem.

Does the ULTRALOQ Bolt SE have a built-in keypad?

Yes. The ULTRALOQ Bolt SE includes a glove-friendly keypad for up to 50 codes and a fingerprint reader. The Nuki Smart Lock Ultra needs its separate Keypad accessory for codes and prints.

Do both work with Apple Home and Home Assistant?

Yes. The Nuki Smart Lock Ultra and the ULTRALOQ Bolt SE both join Matter over Thread and work with Apple Home, Alexa, Google Home, SmartThings and Home Assistant.

Which one should a renter buy?

The Nuki Smart Lock Ultra, which mounts over a European euro-cylinder without drilling or swapping the cylinder. The ULTRALOQ Bolt SE is a full deadbolt replacement and less reversible.

How does battery life compare?

The ULTRALOQ Bolt SE is rated at 18 months on four AA batteries, though some owners report less. The Nuki Smart Lock Ultra uses a rechargeable built-in battery rated around six months.

Which lock is easier to install?

Both are described as straightforward, though the ULTRALOQ Bolt SE is a quicker physical job and the Nuki Smart Lock Ultra involves setting a cylinder length. Their real trouble spots are software onboarding, not the hardware.

Full comparison table

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