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One small design suggestion. You should include a battery so that if the electricity were to go out you could still see the time or be alerted at the time of the alarm.

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Yep, I mention that in the post. I have an LoLin ESP32 board that includes a charger and battery connector, I might just use that.

Additional small design suggestion: fade in the beeper too instead of starting full blast.

I'd suggest checking out the Android app Talalarmo, which gets most things right (no snooze, same time every day). Specifically my fork, which adds press-and-hold-to-dismiss. I can build you an apk if you don't have an Android environment set up https://github.com/smichel17/talalarmo

That's interesting, I'll try it out (I have Android Studio installed so I should be good to build), thanks!

Fading in the alarm is the only way to go, IMHO. I don't even use my alarm clock, I just set my phone. The stock Android clock now includes a fading in feature, and lots of aftermarket ones have it as well.

If the electricity goes out, so does the internet (usually). How is it going to keep track of time then?

It works without the internet, it just might drift eventually. It'd probably take days, though.

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