Post #3356866
2026-06-19 11:21 UTC
@sebz@chaos.social @mlanger@mastodon.world @tomsart@mastodon.social
In 2018, I installed an app called Infrasound Detector on what is now a very old (but still working) Android tablet. This tablet no longer gets OS updates (and it's not supported by Lineage / Replicant / postmarketOS) but the apps that are still on it all work offline.
I just tested the app now, and it still works.
https://play.google.com/store/apps/details?id=com.microcadsystems.serge.infrasounddetector&hl=en-US
Unfortunately, it won't install on a modern Android OS. The developer last updated it in 2018.
I'll check for free alternatives.
Replies (2)
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@dec23k@mastodon.ie 2026-06-19 11:34
@sebz@chaos.social @mlanger@mastodon.world @tomsart@mastodon.social After a quick look on the Play Store, all the apps that I can find are pay-only, freemium, and cloud or AI powered. (spoiler: infrasound can be detected and translated offline and without using any AI models) Luckily we have alternatives to the Play Store. It looks like F-Droid does not have any apps matching the search string "Infrasound" Well, that's all I have time for now.
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@mlanger@mastodon.world 2026-06-19 13:35
@dec23k@mastodon.ie @sebz@chaos.social @tomsart@mastodon.social I'm in the iOS universe, but I'll look for something in the Apple Store. Infrasound sound is what I suspect.