# Heidelberg Catechism (RCUS) — The Heidelberg Catechism > Memorization tool for the Heidelberg Catechism with review, practice, and quiz modes. (iPhone/iPad app by Andrew Dirks.) - Source: https://appshunter.io/ios/app/heidelberg-catechism-rcus/id1443296306 (this page in markdown: same URL + `.md`) - Developer: [Andrew Dirks](https://appshunter.io/developer/1443296305) - Category: Reference, Education - Price: Free - Rating: 4.00/5 from 2 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 4 MB - Languages: American English - Released: 2019-11-17 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/heidelberg-catechism-rcus/id1443296306/reviews.md ## What is 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. ## Key features - Sequential review of all questions and answers - Mark questions as mastered - Practice questions individually with hints - Filter questions by mastered/unmastered - Randomized quizzes with customizable ranges - Quiz exclusively on mastered questions ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/heidelberg-catechism-rcus/id1443296306/reviews.md ### 5/5 — Where are the footnotes? *2026-02-20* The app works fine with questions and answers, and the quizzes, etc. HOWEVER, you have the little footnotes in the text, but they don’t link to the scripture verses. That would be nice if they worked. THANKS. Hurray- they did it! Wonderful addition of the scripture proof texts. They work very well. Thank you!! **Developer response:** Updated to add footnotes, and link to Bible Gateway for the verses. ### 3/5 — Where are the footnotes? *2019-11-03* The app works fine with questions and answers, and the quizzes, etc. HOWEVER, you have the little footnotes in the text, but they don’t link to the scripture verses. That would be nice if they worked. THANKS. **Developer response:** Updated to add footnotes, and link to Bible Gateway for the verses. ## Frequently asked questions about Heidelberg Catechism (RCUS) ### What is the Heidelberg Catechism app? The Heidelberg Catechism app is a free reference tool designed to help users memorize the 129 questions and answers of the 2025 RCUS Modern English Edition of the Heidelberg Catechism. It features review, practice, and quiz modes to aid in learning. ### How does the Heidelberg Catechism app track progress? Users can mark questions as 'mastered' within the Review, Practice, and Quiz tabs. This allows for easy tracking of learned material and the ability to filter or quiz specifically on mastered questions. ### Can I practice specific sections of the Heidelberg Catechism? Yes, the Quiz tab allows you to configure a question range to focus on a specific subset of the catechism. You can also choose to quiz only on questions you have already marked as mastered. ### Does the Heidelberg Catechism app have ads? No, the Heidelberg Catechism app is ad-free. It does not contain any advertisements, providing an uninterrupted learning experience for users. ### What devices support the Heidelberg Catechism app? The Heidelberg Catechism app is available on Mac, iPhone, iPad, and iPod. This broad compatibility ensures users can study across multiple Apple devices. ### How often is the Heidelberg Catechism app updated? The app was last updated on February 18, 2026, with version 2.0.0. While specific update frequency isn't detailed, this indicates ongoing support and potential for future improvements. ### What is the age rating for the Heidelberg Catechism app? The Heidelberg Catechism app has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger learners, due to its educational content. ### Is the Heidelberg Catechism app available in multiple languages? The current description specifies the '2025 RCUS Modern English Edition'. While it doesn't mention other languages, the app focuses on this specific English version for memorization. ## Version history (last 3 releases) ### 2.0.0 — 2026-02-18 Practice Tab - Filter questions by All, Mastered, or Unmastered directly in the list and while viewing a question - Navigate to the previous or next question in your filtered set without returning to the list - Hint and Show Answer buttons to guide recall - Mark questions as mastered from within the practice view Quiz Tab - Quiz is now always randomized — sequential mode has been moved out of Quiz and into Practice - Only Include Mastered option to restrict questions to those already marked as mastered - Mark questions as mastered directly from the quiz All Tabs - Mastery tracking per question — mark any question as mastered and track progress across the app - Multi-user support — add multiple users, each with their own mastered questions and settings - Settings sync across devices via iCloud ### 1.01 — 2019-11-17 1) Resolved bug for slider 2) Reverted from split view to stack view for iPad view 3) Centered text for hint ### 1.0 — 2019-11-02 No release notes. ## More apps by Andrew Dirks - [Westminster Shorter](https://appshunter.io/ios/app/westminster-shorter/id1443680325) - [Interval Timer - HIIT](https://appshunter.io/ios/app/interval-timer-hiit/id1526080613) All apps by Andrew Dirks: https://appshunter.io/developer/1443296305 ## Related topics [heidelberg catechism](https://appshunter.io/ios/topics/heidelberg-catechism) · [heidelberg reformation association](https://appshunter.io/ios/topics/heidelberg-reformation-association) · [lutheran catechism](https://appshunter.io/ios/topics/lutheran-catechism) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*