English Grammar Rules & Tests

Learn English grammar rule by rule, with right and wrong examples side by side, error correction drills and tests for every topic. Free to start, short lessons, works offline.

English Grammar Rules & Tests is a rules-first English grammar course. Each lesson states one grammar rule in plain words, shows the correct sentence next to the mistake learners often make, then drills it with practice questions. When you miss a question, the explanation names the rule behind the answer.

ENGLISH GRAMMAR LESSONS, FOUR LEVELS
- 24 units and 72 short lessons: Foundations, Core, Structures and Advanced
- Nouns, articles, pronouns, prepositions, adjectives and adverbs
- English tenses: present, past and perfect, future forms, modal verbs, questions and tags
- Conditionals, passive voice, reported speech, relative clauses, gerunds and infinitives
- Wishes, inversion, emphasis, punctuation and advanced article use
- Every rule shown with right and wrong sentences side by side

GRAMMAR PRACTICE AND ERROR CORRECTION
- More than 900 lesson questions: choose the correct sentence, pick the right form, type the correction, put words in order, match, true or false
- Two units of error correction: spot and fix mistakes, then edit short paragraphs
- A full mistake notebook that retests the errors you keep making
- A daily challenge and spaced review with no daily limit, so mistakes come back when you need them

ENGLISH GRAMMAR TESTS
- A placement test that finds your starting level
- Unit tests, topic tests and mixed tests across everything you have covered
- Practice the structures that English exams and school tests check, and see which topics to fix before test day

GRAMMAR REFERENCE LIBRARY
- Tense chart, parts of speech, modal verbs, irregular verbs, a punctuation guide and 30 common mistakes
- Offline search across lessons and reference pages

FREE, WITH OPTIONAL PREMIUM
Every unit, lesson and test is free. Ads appear on some browse screens and between some completed lessons, never during a question or a test. Optional short videos can unlock a Premium feature for 24 hours. Premium removes ads and adds the advanced layer: level exams with certificates, a 90 second timed sprint, weekly mastery tests, advanced insights, bonus practice, streak freeze and extra accent colors.
Premium: $3.99 per month, $39.99 per year or $59.99 one time (lifetime). Prices may vary by country and are shown in Google Play. Subscriptions renew until you cancel in Google Play; the lifetime purchase is paid once.

QUESTIONS LEARNERS ASK
How can I improve my English grammar? Take the placement test, then study one rule a day and retest your mistakes in the notebook.
Can I practice English grammar offline? Yes. Lessons, tests, search and review need no internet.
Is there a grammar test to check my level? Yes, a placement test, unit tests and mixed tests.

GOOD TO KNOW
- Your progress is stored on your device only. Uninstalling the app or changing phone clears it.
- The app teaches grammar and checks your answers to its own questions. It does not grade writing you type freely.
- The app interface is in English. It is a study aid, not an official exam and not connected to any exam provider.

PRIVACY
No account is needed. Your progress stays on your device. Ads are served by Google AdMob, which may use your device advertising ID depending on your consent choices, and you can review them from the Me tab. Read the privacy policy in the app or on our website.

Made by Ecom Swift LLC. Questions? support@ecomswiftllc.com

Recent changes:
Ad and performance improvements.