- LoadingListActivity (Android ListActivity) -- helper to show progress spinner while loading
- ConversationsActivity -- shows all APRS message conversations
- MainListActivity -- helper with start/stop action buttons at the bottom
- HubActivity -- list of stations sorted by distance
- LogActivity -- list of all packets sent and received
- StationHelper -- helper for per-station menus
- MessageActivity -- conversation with a callsign
- StationActivity -- details of a callsign, list of all SSIDs, list of all packets
- MapAct (MapsForge MapActivity) -- offline map
- GoogleMapAct (Android Activity) -- online map
- PrefsAct (Android PreferenceActivity) -- central preferences
- PrefSymbolAct (Android Activity) -- chooser for APRS symbol
- ProfileImportActivity (Android Activity) -- JSON profile file import
- KeyfileImportActivity (Android Activity) -- SSL key (.p12) file import