SBF-Fragen is a questionnaire learning app designed to help users prepare for the German pleasure boat piloting license for inland waters (IWM) called Sportbootführerschein Binnen (Sbf Binnen), coastal waters (CWM) called Sportbootführerschein See (Sbf See), Lake Constance called Bodenseeschifferpatent (BSP), as well as maritime radio licenses like Short Range Certificate (SRC), Long Range Certificate (LRC), or inland radio certificate UKW Binnenschiffahrtsfunk (UBI). The app offers a limited questionnaire for free and allows users to purchase additional content. It is a comprehensive tool for studying for the theoretical boat piloting exam or the examination for the radio certificate.

The app features an extensive question bank with detailed explanations and pictures to help users understand the answers. It also utilizes a keyword-based learning system, where relevant words are highlighted, and a card index system inspired by Sebastian Leitner's learning method. Users can learn chapter by chapter or tackle the entire catalog of questions. The app provides statistics on learning progress and offers an exam simulation with the same time limit as the real test. Additional features include an intelligent mock configuration, cognitive association through illustrations, a catalog of questions from official sources, keyword search, and a customized flashcard system for long-term memory learning. The app also allows multiple users to track their individual learning progress.