For those that develop or want to develop on iPad and Mac* i've been building TilePix for the last 5 months, just released update V1.9 building ontop of the existing feature implementations and further optimisations.
it's designed to do a bulk of the workload involving making a tileset, tilemaps and even has a built-in class editor as of writing using Bool and String class types. Exporting in a zipped JSON and PNG format or in a Tiled project file to maintain compatibility with major game engines.
Compatible with ipadOS 17+