NotTiled is a free (no ads or micro transactions), open source, and multi platform tile map editor. It is based on Tiled Map Editor (https://www.mapeditor.org/) by Thorbjørn Lindeijer.

What you can do with NotTiled:
- Create/edit .tmx file on the go. Support lua/json/csv export.
- Create custom maps for games that support .tmx maps. Eg, Rusted Warfare.
- Create pixel images/animations for your game.
- Create music using jfugue notation. Support midi export.
- Create photo mosaics that you can show off to your friends.
- Create 2D tabletop RPG map design. Support exporting to PNG.
- Create silly platformer/rpg-styled mini games.
- Create cross-stitch patterns from photos? (why not..?)
- among other things... (anything that require tiling things perhaps...)

Please visit NotTiled official discord server if you need the PC version too ;)
Thank you.

PS: I rarely read reviews, so please contact me via discord if you found bugs/errors or if you have any suggestions. Good reviews would be appreciated though ;).