Heidelberg Catechism (RCUS)

The Heidelberg Catechism app provides three tabs to help you memorize all 129 questions and answers of the 2025 RCUS Modern English Edition of the Heidelberg Catechism: 1) Review Tab Browse the complete catechism sequentially. Each question displays its full answer for reading and initial memorization. Mark questions as mastered to track your progress. 2) Practice Tab Study questions one at a time with guided assistance. Filter the list by All, Mastered, or Unmastered questions, then tap any question to practice it. Use the Hint or Show Answer buttons to check your recall, and navigate to the previous or next question in your filtered set without returning to the list. Mark questions as mastered as you go. 3) Quiz Tab Test your knowledge with randomly selected questions. Configure a question range to focus on a specific subset, or enable Only Include Mastered to quiz yourself exclusively on questions you've already marked as mastered. Use the Hint and Show Answer buttons to check your answer, and mark questions as mastered directly from the quiz. Text of the Heidelberg Catechism copyrighted 2025 by RCUS. Used with Permission. Icon background image by Aaron Burden.