By offline-friendly you're referring to the compass part only, right?
Otherwise users would have to download the map in advance which would take more that 2MB. Am I reading this right?
For maps, it’s a bit different users initially see an online basemap (requires internet). Instead of forcing them to download an entire map upfront like some libraries (e.g., MapsForge), they can crop or select specific areas to download.
This makes it convenient to get only the map they need. Of course, if they prefer online maps, the app will cache tiles automatically. In remote areas, offline maps can be used as planned.