epicGM 1.8 is out and finally brings in the first iteration of a battle map grid. The grid is an infinitely sized 3d grid and supports tokens linked to the tracker. Custom images are also supported for the creature and player compendium and are automatically loaded when the app is run.
I've also added the option to use link upto 4k images for your maps. Do note, that for now, only 512 images are supported for campaign uploads.
I'll be continuing to iterate and improve the battle map, but I would love to hear what additional features you want me to add/support for the battle map system.