How is it better than Obsidian, that stores files locally? I didn't find any info about pricing, also I can't find how to delete a «project» (created three of

How is it better than Obsidian, that stores files locally? I didn't find any info about pricing, also I can't find how to delete a «project» (created three of them when I was randomly clicking all the buttons to understand better how your site works and now don't know how to get rid of them).