Thread: iPad app that displays MBTiles maps from a USB stick?

I have the UK OS maps in a 240GB MBTiles database. On my Android that goes on hikes with me I use AlpineQuest (bonus: it reads my older MemoryMap files too). My wife has an iPad Air 4 and I want to put the maps on there for the bigger screen; AlpineQuest is Android only of course. It'll have to go on a USB stick for that.

So... can anyone recommend me a good app that will do this? I don't need much else in the way of features. Mostly just the ability to read my MBTiles database from the USB, show where I am (GPS), display the multiple zoom levels nicely and not bombard me with adverts and such or track every place I scratch an itch. The ability to enter waypoints, load a simple route or track where I've been would be nice. It must be able to work completely offline although it'll mostly be used sitting in hotel rooms for planning stuff. (It's too expensive to lug that fragile thing on the hills.)

I don't mind paying for the app if it's good.