Fit fürs Abi Express is a free training app developed by Westermann Digital GmbH, offering express training for 10 Abitur subjects: biology, chemistry, German, English, geography, history, mathematics, music, physics, as well as politics and economics. Each subject includes 100 interactive test items with solution aids and concise evaluations. The app features a favorites function for personalized training and allows users to track their learning progress by reviewing individual training results.

This app serves as a valuable complement to the "Fit fürs Abi Express" book series, which presents essential Abitur topics concisely for the final sprint. With features like simple user guidance, favorites functionality, search option, and offline usability, it caters to both traditional learners and "Abitur late starters."