The Affinity apps use a single file format, so it should be possible to open any Affinity file in any Affinity app on any supported platform as long as the app last used to save the document is the same version or older.
The Affinity apps use a single file format, so it should be possible to open any Affinity file in any Affinity app on any supported platform as long as the app last used to save the document is the same version or older.