The best way to sustain everyday.app is by making it open source and use cloudstorage (with encryption) to sync it. You don't need to make people paying $12. Great app.
I am assuming that you are doing something for the community and that you will definitely get contributors. The project can have more impact if so. Look at this open-source app to have an idea of what kind of project I am talking about : https://github.com/laurent22/joplin
I disagree. I signed up for the free initial plan of "everyday" yesterday (before seeing this thread - actually one from indiehackers). Yes, I could do something in Excel spreadsheets - but $12 is more than useful.
