Would you mind elaborating on "I decided to make Daino Notes closed source due to difficulties in monetizing FOSS" ?. How do you plan to monetize this?
You can pay for the Pro version to use advanced blocks such as kanban, images,Drop cap. Also, the free version limits you to 10 notes.
BUT, I'm planning to change that very soon, I will make all the current Pro features free and the only thing that will cost money will be cloud storage with real-time sync when I'll release the new mobile app.
Yup good plan, tying Pro to cloud features makes sense for subscription model.