Thank you for the recommendation.

I'm not exactly sure what you mean...

Slack is built on Electron and has multiple subscription levels. So their license should provide you with some good ideas :)

It's true that there's resemblance, however the code is 100% proprietary.

The reason I made the app is an easier and more convenient alternative for Android users of my website that calculates the same thing.

The difference being that with the Android app, users can actually set an alarm, as opposed to just figuring out when they should sleep/wake up and have to manually set it.

I think the description is in fact automatically translated by google. I haven't really added any other country specific translation. If you can help me out with a proper translation of the headline for Hungarian I'd be happy to change it.

Thank you.

100K bottom threshold, 50K if < 6 months old

I would think that for a small web app 100K a month would probably be the starting threshold. (maybe even 50K if it's < 6 months old)