There were already a couple of tools in this space for folks to contrast/compare:

inftyeditor: https://www.inftyproject.org/en/software.html

ffes: https://www.cs.rit.edu/~rlaz/ffes/

TeXview.app had an option to enter a single character using a graphics tablet or mouse which worked quite well (and allowed me to type up notes for a college professor).

detexify (https://detexify.kirelabs.org/classify.html) also does drawn character identification and is a webpage.