Updated November 2026
Data from the official Nuki and ULTRALOQ sites.
2026 verdict
For a US-style deadbolt where fingerprint and keypad entry need to work out of the box, the ULTRALOQ Bolt SE is the better smart lock of this pair, and the more affordable one too.
It builds a fingerprint scanner, a glove-friendly keypad and Matter over Thread straight into the lock, so Apple Home, Alexa, Google Home and SmartThings all get real notifications with no extra hardware. The Nuki Smart Lock Pro answers with a two year warranty against 18 months and mounts instead over a European cylinder, keeping the existing key working from outside. Both build Wi-Fi into the lock itself, so remote access needs no paid bridge, and both lean on a Thread border router for their Matter connection. Choose the ULTRALOQ Bolt SE for a US deadbolt with fingerprint and codes on the lock itself, and the Nuki Smart Lock Pro for a European door where a retrofit body is what actually fits.
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The biggest differences
Where these two are furthest apart, and by how much.
- Battery Life3×ULTRALOQ Bolt SE18 months vs 6 months
- Warranty+35%Nuki Smart Lock Pro2 years vs 18 months
| Feature | Nuki Smart Lock Pro | ULTRALOQ Bolt SE | Winner |
|---|---|---|---|
| Warranty | 2 years | 18 months | Nuki Smart Lock Pro |
| Battery Life | 6 months | 18 months | ULTRALOQ Bolt SE |
| One-Time Password | Keypad required | YES | ULTRALOQ Bolt SE |
| Periodic Password | Keypad required | YES | ULTRALOQ Bolt SE |
| Rating | 4.3 | 4.3 | Tie |
| Connectivity | 2.4 GHz WiFi, Bluetooth, Thread Protocol | 2.4 GHz WiFi, Bluetooth, Thread Protocol | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, Physical Key | Remote, Bluetooth, Passcode, Fingerprint, Physical Key | Tie |
| Emergency Fingerprint | NO | NO | Tie |
| Doorbell | NO | NO | Tie |
| Local Control | YES | YES | Tie |
What the differences mean
Door type
The Nuki Smart Lock Pro is a retrofit for European-style cylinder doors, mounted over the existing lock with the key still working from outside. The ULTRALOQ Bolt SE is a US-style deadbolt replacement. Check which one your door takes before comparing anything else, since only one of them will physically fit.
Entry methods
The ULTRALOQ Bolt SE has a fingerprint scanner and a keypad built into the lock, covering up to 50 prints and 50 codes. The Nuki Smart Lock Pro opens with the app, Bluetooth or the physical key on its own, and needs the separate Keypad or Keypad 2 accessory for codes or a fingerprint.
Warranty
Nuki backs the Smart Lock Pro for two years. ULTRALOQ covers the Bolt SE's electronics for 18 months, though the mechanical hardware carries a lifetime warranty.
Power
The Nuki Smart Lock Pro runs on a rechargeable built-in battery rated around six months per charge. The ULTRALOQ Bolt SE uses four AA batteries rated at 18 months, so it swaps batteries rather than plugging in to recharge.
Price
The ULTRALOQ Bolt SE costs meaningfully less than the Nuki Smart Lock Pro, and that gap widens once the Pro's Keypad accessory is added for codes or a fingerprint.
Which one to buy if
- your door has a European cylinder
Only the Nuki Smart Lock Pro is built to retrofit over that lock type; the ULTRALOQ Bolt SE is a US deadbolt.
- you want fingerprint and keypad entry with nothing extra to buy
The ULTRALOQ Bolt SE has both built into the lock, where the Nuki Smart Lock Pro needs a separate Keypad accessory for either.
- you would rather recharge a battery than swap AA cells
The Nuki Smart Lock Pro runs on a built-in rechargeable cell; the ULTRALOQ Bolt SE takes four AA batteries.
- a longer warranty matters more than the lowest price
Nuki covers the Smart Lock Pro's electronics for two years against 18 months on the ULTRALOQ Bolt SE.
- + Warranty: 2 years
- - Battery Life: 6 months vs 18 months
- - One-Time Password: Keypad required vs YES
Winner
20% OFF
Prime exclusive deal$79.99
$99.99
- + Battery Life: 18 months
- + One-Time Password: YES
- + Periodic Password: YES
- - Warranty: 18 months vs 2 years
What owners say
Owners of both locks value a fast, tool-free install, though Nuki Smart Lock Pro buyers describe a few things to check first, a protruding cylinder and a key that turns from both sides, while ULTRALOQ Bolt SE owners more often call the software setup, not the mounting, the fiddly part, especially pairing Matter for Apple Home. Nuki Smart Lock Pro owners single out built-in Wi-Fi with no paid add-on, unlike Nuki's own cheaper Go, a strong rechargeable motor and hands-free auto-unlock arriving with full hands, but flag the price once the Keypad accessory is added and a few battery or charging failures within months. ULTRALOQ Bolt SE owners praise the fingerprint reader, having codes and prints built into the lock rather than sold separately, and customer service they call excellent, while several report battery life well short of the 18 month claim and Matter pairing documentation that leaves them stuck.
Frequently Asked Questions
Which is better overall: Nuki Smart Lock Pro or ULTRALOQ Bolt SE?
The ULTRALOQ Bolt SE, for most buyers: it packs a fingerprint reader and a keypad into the lock itself and costs less. The Nuki Smart Lock Pro is the right choice only when the door has a European cylinder, which the ULTRALOQ does not fit.
What is the difference between the Nuki Smart Lock Pro and the ULTRALOQ Bolt SE?
Door type first: the Nuki Smart Lock Pro retrofits a European cylinder, the ULTRALOQ Bolt SE replaces a US deadbolt. Beyond that, the ULTRALOQ builds fingerprint and keypad entry into the lock, while the Nuki needs a separate Keypad accessory for either.
Does the ULTRALOQ Bolt SE have a fingerprint reader and keypad built in?
Yes, both are on the lock itself, storing up to 50 fingerprints and 50 codes. The Nuki Smart Lock Pro ships with neither built in and relies on its Keypad or Keypad 2 accessory for that entry method.
Do both locks work with Apple Home and Matter?
Yes. The Nuki Smart Lock Pro and the ULTRALOQ Bolt SE both reach Apple Home, Alexa, Google Home and SmartThings through Matter over Thread, and both need a Thread border router for it.
Who should buy the Nuki Smart Lock Pro?
Anyone with a European cylinder door who wants built-in Wi-Fi with no paid bridge, a fast rechargeable motor and hands-free auto-unlock, and who is prepared to add a Keypad accessory for codes or a fingerprint.
Who should buy the ULTRALOQ Bolt SE?
US households with a standard deadbolt who want fingerprint and keypad entry included at a lower price, and who are comfortable setting up Matter over Thread for Apple Home.
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