With the backup file you can save all your vocabulary along with your learning progress or transfer it to a second device.
If you want to learn more vocabulary, you can remove the limit at any time by purchasing an in-app-purchase.
Not only can you create new vocabulary lists directly in the app, but you can also easily import them into the VokabelBox on your PC using your spreadsheet program.
The VokabelBox is a vocabulary trainer with which you can learn your vocabulary in a structured and lasting way.
If you have made mistakes, you can repeat the wrong answered vocabulary immediately, or you can start a test with new vocabulary.