Notes app rule
So my suggestion is, every notes app should make it easy to delete a note.
Either there is 1 step or 2 step that is maximum, should not be 3 or 4. Every notes app should make it very easy to delete a note, that's my suggestion.
If you’re unsure whether to ask “are you sure?”, I could say: it wont be necessary. We know exactly what we’re doing when we intend to delete a note that time we press the delete button. Anyway it goes to the recycle bin, isn’t it? It could be recovered later. So don’t ask “are you sure?”.