AlterLock

In-app purchases
3.2
100 reviews
5K+
Downloads
Content rating
PEGI 3
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

The AlterLock app works in conjunction with the theft prevention device "AlterLock" to keep an eye on your beloved vehicle, including bicycles, motorcycles, and cars. The AlterLock device provides peace of mind through loud alarms, smartphone notifications, and GPS tracking capabilities.

Key features include:
1. Alarm to Deter Thieves: A movement-detection alarm sounds directly from the device, deterring criminals and providing a strong deterrent against theft and vandalism.
2. Smartphone Notifications for Assurance: If the device detects movement, it will send a unique notification sound to your smartphone, allowing you to quickly notice and rush to your vehicle.
3. Independent Communication Function: The device can communicate on its own, sending notifications and location information even outside the Bluetooth range.
4. Advanced Tracking Ability: It attempts to pinpoint location information indoors and outdoors by receiving not only precise GPS signals but also Wi-Fi and cell tower signals.

Additional App Functions:
- Register photos, specs, and frame numbers of your vehicles.
- Toggle the device's lock mode.
- Adjust various device settings (detection sensitivity, alarm patterns, on/off, duration of sound, regular communication, accident detection, etc.).
- Display tracking location information and history on the map screen.
- Manage up to three vehicles and devices.

Please note:
- User registration is required to use the service.
- Purchase of the AlterLock device and a service agreement is also required.
- This service does not guarantee theft prevention.

For more details on service contracts and usage fees, please visit:
https://alterlock.net/en/service-description

Terms and Conditions:
https://alterlock.net/en/service-terms

Privacy Policy:
https://alterlock.net/en/privacy-policy
Updated on
Sep 19, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity and App info and performance
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.2
99 reviews
Gordan Grgic
July 10, 2025
Title: Very Disappointing Experience – Unreliable App Makes the Device Almost Useless I purchased the Alterlock Gen3 after previously using the Knog Scout, and unfortunately, this has been a huge disappointment. The hardware itself seems fine, but the app is full of issues that make the product unreliable and frustrating to use
Did you find this helpful?
Leon S
April 24, 2022
This app is always sending me random notifications that and making sound, but the funny thing is, when the bike is actually triggering the alarm, the app doesn't make a sound. I wish there was a function to stop the useless notifications from happening and actually alarm me when it matters. Also when the alarm is triggered, I have no clue how to actually use the GPS to find my bike, but maybe I am missing something.
2 people found this review helpful
Did you find this helpful?
Nextscape Inc.
May 26, 2022
Thank your for your review and we are sorry for the inconvenience. Please check to make sure that your firmware version is up to date. Since the earlier firmware version originally downloaded into the device had a few issues with its stability, updating to the latest one might simply solve the problem.
Wayne Arrindell
July 18, 2023
I had the worst experience possible with alterlock. You pay £118 basically for just the alarm. The device fails to alert your phone if your bike is stolen as the sigfox does NOT have universal coverage. It is an expensive tracker that is basically useless. Alterlock are wrong to sell a product that they knowingly know does not serve areas that they send the device to and then to insult to injury they avoid refunding you. I'm going to alert the ombudsman about what is basically an elaborate con!
1 person found this review helpful
Did you find this helpful?
Nextscape Inc.
July 28, 2023
We apologize for any inconvenience caused. This product is sold mainly in countries with a large Sigfox service area, and we have a page where you can search the service area by map or zip code before purchasing. We have already processed the refund for you.

What’s new

- Improved location display while connected via Bluetooth
- Added app review feature

App support

About the developer
NEXTSCAPE INC.
inquiry@nextscape.net
1-23-1, TORANOMON TORANOMON HILLS MORI TOWER 16F. MINATO-KU, 東京都 105-0001 Japan
+81 3-5325-1301