Heidelberg Catechism

Q.Z.L Corp.

About this app

Heidelberg Catechism — Learn, Memorize & Grow in Faith (v1.0)

Your companion app for studying the Heidelberg Catechism, one of the most beloved catechisms of the Protestant Reformation.

What's included:
• Browse all 129 questions & answers organized by Lord's Days (1–52)
• Catalogue view — explore by topic and doctrinal structure
• Quiz mode — test your knowledge with self-assessment and score tracking
• AI Tutor — ask questions and get answers grounded in the catechism, powered by Google AI
• Text-to-Speech — listen to questions and answers read aloud
• Study progress tracking — mark questions as studied and review missed ones
• Question of the Day — daily focus for consistent learning
• Bilingual support — English and Chinese (中文)
• Beautiful, clean interface designed for focused study

Whether you're a new believer, a seminary student, or a lifelong Reformed Christian, this app helps you engage deeply with the rich theology of the Heidelberg Catechism — anytime, anywhere.

What’s new

Learn & memorize the Heidelberg Catechism with quiz, AI tutor & text-to-speech