Mobile |best| - Terraria Map Editor

While there is no official map editor built specifically for mobile, you can edit your mobile Terraria

Map viewing: Fast rendering of full-world maps; zoom and pan are responsive even on midrange phones.
Tile editing tools: Intuitive brush, fill, and replace tools for changing tiles, walls, and liquids.
Entity management: Displays NPCs, chests, signs, and spawn points; lets you move or remove many entities.
Import/export: Supports opening local world files and exporting modified maps in compatible formats for re-import to Terraria (with proper tools).
Performance: Memory usage is reasonable; large worlds load without excessive crashes on recent devices.
Offline use: Works without an internet connection after initial install.

Official mobile Terraria doesn’t include a built-in world editor.
You can edit mobile worlds using third-party editors or by moving world files between devices and editing on PC.
Always back up your world file before editing.

Place tiles, walls, and wires just like using a drawing program. terraria map editor mobile