This is why my old iPad 2 is sitting in a box somewhere. Old Android phones got wiped, bootloader unlocked, and the latest version of LineageOS, etc. they could handle. They mostly get used as readers, fancy remotes, or media players (older ones in airplane mode when not powered off fully for security reasons).
Smartphones are computers.
Creating artificial product categories, taxonomy, is why we’re in this predicament.
Semantic woo is leveraged to decide a smartphone is not a general purpose computer such that corporate entity can label it new thing and set new expectations.
Intellectual property law and protections need to be thrown in the garbage, no device sold without being unlocked.
It’s thought policing when I’m convinced a general purpose computer (smartphone) is something else altogether. We live in a carceral society that’s extracting our agency to coddle a handful of replaceable figureheads.
War is peace. Apple is anti-1984.
That there's a GP computer inside isn't that meaningful. There's one inside "smart" TVs, too, but those TVs are still just appliances.
basically, the app judges your current phase of sleep by sensing your movements, and purports to wake you up at the optimal moment. It seems to work for me, which is good enough for me, after all. YMMV?
But if you're unable to download it now, I don't have a good solution for you, sorry. I hope you figure it out!