> There were not many such apps. Probably I used the same app about 10+ years ago.
Funnily enough, I still use one with that feature, though I don’t think I’ve ever used that feature with it. It’s Gentle Alarm (originally a paid app), which requires unpacking the apk, editing the manifest, repacking, sideloading, and giving "draw over other apps" permission to use on modern Android. The developer long ago abandoned it, the website is not registered anymore, the support mail fails, and their Google account is deleted. But it’s by far the most featureful Alarm app I know, and if any Android update completely broke it, I’d debate staying on an older version.
Funnily enough, I still use one with that feature, though I don’t think I’ve ever used that feature with it. It’s Gentle Alarm (originally a paid app), which requires unpacking the apk, editing the manifest, repacking, sideloading, and giving "draw over other apps" permission to use on modern Android. The developer long ago abandoned it, the website is not registered anymore, the support mail fails, and their Google account is deleted. But it’s by far the most featureful Alarm app I know, and if any Android update completely broke it, I’d debate staying on an older version.