Re: All I want to is apps to work reliably.
It does work reliably except on certain phone models from certain manufacturers which deliberately break Android.
BTW, the "alarm window" (coalesce interval) used by Aqua Mail is 30 seconds.
Re: I don't have many "alarms" that need to coalesce
"alarms" isn't just "morning wake up alarms"... I don't think you have a way to know how many alarms are actually used / fired by all the software on your phone.
Re: This reminder app is just working reliably.
Good, it means your phone's manufacturer did not break the "exact" methods.
There is nothing to prevent it to do this in the future, accidentally or intentionally.
Until recently, even on Xiaomi phones, "whitelisting" Aqua Mail in MIUI settings was enough to make it work reliably and predictably.
And then Xiaomi broke this, accidentally or intentionally.
Re: Maybe an advanced option somewhere for use of this "exact" method,
Nah, a setting would only be discovered by maybe 1% of users who need it.
If we do it, the code will use it automatically (maybe detect Xiaomi in general, maybe certain models).
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But this is what really amazes me:
Your phone's Android is deliberately broken by the manufacturer.
Why not demand a fix from them?
There are tens of thousands of different Android device models out there right now.
They're all supposed to work the same and not require any "magical" fixes ("use function A which works instead of function B which works on all devices except those from this manufacturer that decided to break it")?