The application can work without an internet connection, but only if offline mode is switched on and the necessary languages have been downloaded beforehand.
When you download offline dictionaries, the app asks where you want to install them.
If this doesn't happen, then manually transfer the app to your memory card.
ExampleTo install the “Spanish — English” language pair, you must have at least 884 MB of free space (312 MB for the archived file, and 572 MB for the decompressed file). Once the data is decompressed, the 312 MB archived file will be deleted.
Make sure that you have enabled offline mode in the Settings.
If offline mode is switched on, but the language pair doesn't work, then contact the developers using the feedback form below.