Welcome to the RB family, Mobile Tile Server
https://apt.izzysoft.de/packages/com.bojko108.mobiletileserver
Mobile Tile Server can be used as a HTTP server, serving Map Tiles from the device storage. When the server is running you can access the tiles from different mapping applications.
Thanks to the help of its author, Bogdan, the app now builds reproducibly
RB status now: 389 apps (31.5%) – so almost every 3rd app is covered meanwhile