This is the easiest way to edit maps directly on your phone or tablet without needing a desktop computer.
: A web-based viewer that works in your mobile browser. It is cross-platform and allows you to upload world files to highlight resources and NPCs without installing an app. terraria map editor mobile
Theo plugged his phone into his laptop, bridging the gap between the powerful PC tools and his mobile save file. He dragged his "World3" into the editor window. This is the easiest way to edit maps
While not a pure mobile solution, this method works flawlessly for iOS users. terraria map editor mobile