Life & fun · alternatives · 2026

24 alternatives to Duo

Chance to save lives. Mobile alerts for your gun safe & more

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Duo launched in 2018; newer entries below may have overtaken it.

1. 1
   Motion Alarm▲82

   An alarm incase your phone is being stolen

   2019 · play.google.com · its alternatives →

2. 2
   Citizen▲220

   Stay safe with instant alerts about nearby crime

   2017 · citizen.com · its alternatives →

3. 3
   Nest Protect 2.0▲182

   All-new smoke sensors and security features.

   2014 · store.google.com · its alternatives →

4. 4
   Ring Alarm System 2.0▲73

   Protect your home, your way.

   2020 · ring.com · its alternatives →

5. 5
   Neighbors▲110

   Neighborhood watch as an app, by Ring

   2018 · ring.com · its alternatives →

6. 6
   Tile Mate▲147

   A tiny bluetooth tracker. Never lose your things.

   2016 · intl.life360.com · its alternatives →

7. 7
   Minut▲122

   A camera-less home security device

   2019 · minut.com · its alternatives →

8. 8
   Proximity▲63

   A smart wearable safety sensor to keep loved ones safe.

   2016 · indiegogo.com · its alternatives →

9. 9
   Tommy – Turn ESP32 devices into through-wall motion sensors▲110

   Hi HN! I would like to present my project called TOMMY, which turns ESP32 devices into motion sensors that work through walls and obstacles using Wi-Fi sensing. TOMMY started as a project for my own use. I was frustrated with motion sensors that didn't detect stationary presence and left dead zones everywhere. Presence sensors existed but were expensive and needed one per room. I explored echo localization first, but microphones listening 24/7 felt too creepy. Then I discovered Wi-Fi sensing - a huge research topic but nothing production-ready yet. It ticked all the boxes: could…

   Oct 2025 · tommysense.com · its alternatives →

10. 10
    Protechme ▲97

    A community-driven safety app and button for fast help

    2024 · protechme.com · its alternatives →

11. 11
    Alarm▲71

    Alarm does one thing and one thing only — alarms.

    2015 · alarm.hone.tools · its alternatives →

12. 12
    RouteWatche▲82

    Stay safe in real time

    2023 · routewatche.com · its alternatives →

13. 13
    Citizen▲44

    Stay safe with instant alerts about nearby crime

    2018 · citizen.com · its alternatives →

14. 14
    Olarm▲71

    Home security simplified

    2018 · kickstarter.com · its alternatives →

15. 15
    GearEye▲73

    A smart device using RFID tech to monitor your gear

    2016 · kickstarter.com · its alternatives →

16. 16
    weWake▲84

    Alarm clock for friends. Wake up together and stay in touch

    2020 · apps.apple.com · its alternatives →

17. 17
    Point▲23

    The Friendly Home Alarm

    2017 · minut.com · its alternatives →

18. 18
    Leeo Smart Alert▲88

    Smart smoke alarm nightlight that sends alerts to your phone

    2014 · its alternatives →

19. 19
    Alarm Buddy▲58

    Alarm app with fun and challenging games

    2022 · its alternatives →

20. 20
    Charger Safety Anti-Theft Alarm▲65

    An alarm tool to protect your device from theft.

    2017 · play.google.com · its alternatives →

21. 21
    Don't Touch My Phone▲71

    Protect your phone from thieves

    2018 · play.google.com · its alternatives →

22. 22
    E1▲10

    Emergency? One tap. People you trust respond.

    2025 · e1app.com · its alternatives →

23. 23
    SalientEye▲64

    Home security alarm system on your phone (Android)

    2015 · play.google.com · its alternatives →

24. 24
    Scan My Network▲8

    Protect Your Network in Real-Time – Stay Safe, Always.

    2025 · resonant-unicorn-01da2b.netlify.app · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →