perfect timing. i was using OpenStreetMap for my ios running app and I found out that there is a cap so I ended up switching to a paid solution and have been trying to build something like comaps by downloading all the tiles
A cap for downloading rendered tiles from osm.org? That exists, but is quite generous.
Other (free) options are https://openfreemap.org/ or https://versatiles.org/ to generate your own tiles.
Look into protomaps instead. One ~100GB archive for the entire world