I've written my own notes apps... It was one of the things that taught me how much I prefer using imperfect tools that already exists rather than adding extra things to maintain, and motivated my "Decustomizing" project to systematically get rid of any unnecessary original tools and look for off the shelf replacements.

Everyone else seems to have opposite experiences, but I've found that getting rid of custom tools, and getting rid of as much original code and support for unusual configurations in the custom tools I do have, has been amazing, one of my very favorite things I've ever done for myself.