Life & fun · alternatives · 2026

This IoT device alerts users to incoming supernovas hours before they would destroy Earth. Designed for astronomy enthusiasts and those interested in space phenomena, it connects to astronomical data sources to provide… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. IoT device to warn you of a supernova hours before Earth is destroyed launched in 2022; newer entries below may have overtaken it.

1. 1
   Exaluminal▲5

   Warns you of a supernova hours before it hits Earth

   2022 · exaluminal.com · its alternatives →

2. 2
   AstroAlert▲113

   Know exactly when satellites pass above you.

   Nov 2025 · astroalert.app · its alternatives →

3. 3NA
   Nebula – Alarm clock where you grow stars while you sleep▲345

   2017 · alextumanov.com · its alternatives →

4. 4
   Luna Ring▲277

   High precision & titanium-AI Smart Ring for peak performance

   2024 · its alternatives →

5. 5
   IOON▲245

   Smart device that turns water into sanitizer.

   2020 · its alternatives →

6. 6
   Cosmic-Watch▲73

   The World’s first 3D astronomical clock & stunning skyguide

   2020 · cosmic-watch.com · its alternatives →

7. 7IV
   I’ve built an IoT device to let my family know when I’m in a meeting▲121

   Introducing the IoT device Tabajara: “I’m in a meeting.”

   2025 · nullonerror.org · its alternatives →

8. 8
   Astropocket ▲72

   Tons of astronomy services, one app.

   2022 · play.google.com · its alternatives →

9. 9
   Lark▲117

   1st crypto app that correlates news to price in real time.

   2017 · its alternatives →

10. 10
    Ouranos API▲63

    Weather service and API specialized in astronomy

    2023 · rapidapi.com · its alternatives →

11. 11
    Lithium - The People's Sense▲107

    IoT community safety app, alerting everyone nearby

    2023 · its alternatives →

12. 12
    Skylive▲120

    Never miss a celestial event, anywhere on Earth

    Jun 2026 · skylive.world · its alternatives →

13. 13CM
    Crescendo – macOS App to view real time event data▲164

    2020 · segphault.io · its alternatives →

14. 14
    Aggregations.io▲145

    Real time for your analytics events

    2023 · aggregations.io · its alternatives →

15. 15
    Ocktet▲64

    Smart IoT threat detection in your Home powered by AI

    2020 · its alternatives →

16. 16
    Snore Circle▲85

    The world's smartest anti-snoring device

    2016 · indiegogo.com · its alternatives →

17. 17
    Nebula Alarm Clock▲89

    Grow stars while you sleep and fight the urge to hit snooze.

    2017 · its alternatives →

18. 18
    Stock Alarm▲74

    Realtime tracking on thousands of stocks

    2022 · stockalarm.io · its alternatives →

19. 19
    NotifyWave▲84

    Real-time notifications for everything that matters to you

    2023 · notifywave.com · its alternatives →

20. 20
    Eclipse Streamsheets▲86

    No-code platform to monitor and visualize IoT real-time data

    2021 · cedalo.com · its alternatives →

21. 21
    BitAlarm▲81

    Set alarms and get push notifications for any cryptocurrency

    2018 · its alternatives →

22. 22
    FotaHub▲59

    Secure firmware over-the-air updates

    2021 · fotahub.com · its alternatives →

23. 23
    Dweet.io – Twitter for machines, now with alerts▲47

    dweet™ - Now with real-time alerts and notifications! Since dweet’s launch in March, the one feature we get asked about more than any other is alerts and notifications. Users want to be able to set up...

    2014 · buglabs.tumblr.com · its alternatives →

24. 24YS
    Yett – Stellar network stats▲27

    2014 · yett.co · 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 →