Yes, RescueDogs can help even with weak or missing reception. You can download offline maps for search areas in advance so the map remains available in the field.
If reception is lost during an active recording, data is cached and synchronized when an internet connection is available again. Prepare such operations or trainings carefully: open the app, load the map area, check the battery, and synchronize important data beforehand.
Login, organization data, live tracking, module activation, and some synchronization functions still require an internet connection.