English Grammar App is a free interactive platform for mastering English grammar. What's inside Over 9,100 exercises across 14 grammar categories including tenses, modal verbs, conditionals, passive voice, reported speech, and more. Every exercise is tagged with CEFR difficulty levels from A1 (beginner) to C1 (advanced). Three ways to practice - Multiple Choice — Pick the correct answer and get instant feedback explaining why it's right or wrong - Worksheet — Fill-in-the-blank style for focused self-study - PDF Download — Print-ready worksheets for classroom use or offline practice Who it's for Self-study learners, ESL/EFL teachers looking for ready-made materials, students preparing for IELTS/TOEFL/Cambridge exams, and parents or tutors who want targeted exercises matched to a student's level. Built with Next.js, React, TypeScript, and Tailwind CSS. All content is statically generated for fast loading anywhere in the world.