Comparison

Nuki Smart Lock vs Alarmnet SOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nuki Smart Lock

Transform your smartphone into a secure digital key for your home. Grant and manage access for family and friends, and monitor who enters and when. Enjoy convenient features like automatic unlocking and locking, with easy DIY installation and smart home integration.

Highlights
  • Turn phone into a key
  • Share access permissions
  • Activity log
  • Auto Unlock/Lock
  • Night Mode
  • Smart Home integration
  • DIY installation
Features
Read full description

Turn your iPhone into a key – with Nuki Nuki: The retrofittable, smart door lock. Innovated in Austria – manufactured in Europe. APP REPLACES KEYS Turn your smart devices into keys. With the free Nuki app, you can open your door with your iPhone or your Apple Watch. Open the door with just one click, even remotely. SHARING KEYS Share access permissions with the Nuki app. Simple and secure. You decide who has access. With the activity log you always know who unlocked your door and when. SMART FEATURES Auto Unlock: Your door opens automatically when you come home. Auto Lock: Automatic locking, form maximum security. Night Mode: Activate various safety features during the night. Customize the night mode to your needs. SMART HOME INTEGRATIONS Easy and fast integration into your existing Smart Home. Thanks to Matter Nuki Smart Locks are compatible with most Smart Home systems. Matter ensures an easy and fast integration. EASY DIY INSTALLATION You can install the Nuki Smart Lock yourself within a few minutes. The Nuki app supports you with a step-by-step guide. See if Nuki is compatible with your door here: www.nuki.io/check SMART ACCESSOIRES The Nuki ecosystem offers you a variety of accessoires. Open fast via fingerprint or entry code with the Nuki Keypad 2 or simple and easy via button with the Nuki Fob. No smartphone needed. Get your Smart Lock now directly in our online shop: https://shop.nuki.io/ We’d love to hear from you. If you have questions about Nuki products please contact us at contact@nuki.io, or visit us on social media.

About

Alarmnet SOS

Features
Read full description

“Although there are Apps that allow you to alert pre-selected loved-ones in an emergency, they only serve to tell people that you are in trouble. Alarmnet SOS uses the geo-data on your phone, it works quickly by sending signals to the closest private security response vehicle in your vicinity. This means that right now Alarmnet SOS can be used anytime, from anywhere. Where you may have robust home and office security systems, this App covers you when you are commuting, traveling, jogging or taking a holiday out of your province. Alarmnet SOS uses the latest geo-tagging technology, through TomTom and the Alarmnet SOS network of Private Security and Ambulance service providers are registered and highly trained. At a small monthly premium, per person, Alarmnet SOS provides security and medical responsecover, wherever you are, when you need it most. According to Statistic-SA, right now crime conditions in South Africa have begun a slow decline since its initial spike in the late 90’s. However, our crime statistics are still high, by worldwide standards, and the rate of decline exhibits a mere 1.4% per year. In reality, this means that although the physical number of criminal incidents have diminished marginally, overall criminal activity is still significantly high. The concentration of serious crime in South Africa remainshigh in densely populated cities, focused more intensely in urban, and suburban areas. Although Public Services, in the form of the South African Police Service, and Public Healthcare Emergency Response exists, resources are limited. “High spike” times of the day and week (for example, Friday nights) result in overburdened public services that are often overwhelmed, slowing response time. Right now Alarmnet SOS provides a “safety-net” for users by supplementing these services with fast acting private service-providers. Although private home-security has become a standard feature for many middle-class South African families, Alarmnet SOS seeks to expand that level of security to external, public environments. The benefits include peace of mind when you, or your loved-ones travel, a lighter load on public services and faster, more effective mitigation of overall criminal activity in cities. There is a term used by paramedics and doctors…”the golden hour”. It refers to the first hour after a physically traumatic, or possibly fatal injury. The Golden Hour is the time in which the most effective life-saving interventions can be applied. Depending on the severity of the injury, the chances of survival diminish with every minute that passes, becoming more and more unlikely as time passes. Immediate medical response is absolutely vital in the event of a serious injury, as the timing very often means the difference between life and death. The Alarmnet SOSApp automatically sends private medical response assistance, and your exact location, the moment you press that button.

Screenshots

Nuki Smart Lock4 screens
Alarmnet SOS4 screens

Verdict

The call

The clearest difference is update cadence: Nuki Smart Lock at every 3 weeks against Alarmnet SOS's every 2 months. Alarmnet SOS's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Nuki Smart Lock ships an update every 3 weeks, Alarmnet SOS every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Nuki Smart Lock versus Alarmnet SOS: the parameters behind the verdict, then further details
ParameterNuki Smart LockAlarmnet SOS
PriceFreeFree
Rating4.7 (522 ratings) — better—
Positive reviews90.2% of reviews—
Number of ratings522 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size325 MB112 MB
Age rating4+4+
DeveloperNuki Home Solutions GmbHSOS-ICT (PTY) LTD

Bugs and requests

Nuki Smart Lock

Reported bugs

3 issues
  • Unreliable geofencing
  • Inconsistent unlock/lock functionality
  • Buggy app updates

Requested features

4 requests
  • Improved battery status monitoring
  • Customizable auto-lock/unlock timers
  • Stronger HomeKit/Alexa integration
  • Ability to create/share access codes

Alarmnet SOS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Nuki Smart Lock

No in-app purchases

None

Alarmnet SOS

No in-app purchases

Questions

Is Nuki Smart Lock free?
Nuki Smart Lock is free to download, with no in-app purchases.
Is Alarmnet SOS free?
Alarmnet SOS is free to download, with no in-app purchases.
Do Nuki Smart Lock or Alarmnet SOS have ads?
Neither Nuki Smart Lock nor Alarmnet SOS shows ads.
Which is updated more often, Nuki Smart Lock or Alarmnet SOS?
Nuki Smart Lock ships an update every 3 weeks, and Alarmnet SOS every 2 months. Most recently, Nuki Smart Lock was updated on November 6, 2026 and Alarmnet SOS on November 3, 2026.

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