Regular Expressions

Regular Expressions is an independent study app for building practical pattern-matching skill through focused questions and review. Use it if you are learning from scratch, preparing for technical interviews, reviewing syntax, or strengthening day-to-day text processing skills. - 160 questions across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts - FSRS spaced-repetition intervals to review at the right time - Weak-point heatmap to spot topics that need more work - Daily challenge for consistent practice - Mock exams for timed review - Every question includes an explanation - Offline practice, no login required Topics cover matching, character classes, quantifiers, anchors, groups, alternation, escaping, lookarounds, greedy behavior, backtracking, and common mistakes. Independent study app for Regular Expressions practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners. Privacy: Practice offline, no login required.