Resolve is not available as a flatpak so distrobox would be your only option to get it running on a atomic distro.
But in general flatpaks are more secure than distrobox containers. Flatpaks are sandboxed. Apps can request access to different parts outside the sandbox through so called portals. Portals are basically like the permission system on your phone. But not all portals are finished yet so apps can get way more permissions in the name of user friendliness. There are third party tools like flatseal, that manage permissions though.
Distrobox on the other hand doesn’t have any of that. Apps can access your entire home directory and a bunch of other stuff if they want
The feature is called “WiFi Tethering” and is available on most Android systems (sometimes OEMs or carriers disable it)
On iOS it should enable automatically if you’ve got a hotspot active and connect your device to your computer via USB