Choose your level, then one topic at a time.
Every answer has an explanation.
Not sure where you are?
Take the free level test →Present and past simple, plurals and articles, prepositions of place and time, comparatives.
Start at A2 →Present perfect, past perfect, used to / would, quantifiers, fixed prepositional phrases.
Start at B1 →Future perfect, past perfect continuous, be to / be due to, perfect simple vs continuous.
Start at B2 →Every topic says which level it is
be/have/have got, present simple, present continuous, simple vs continuous
Choose a subtopic →Past simple, past continuous, used to / would, past perfect
Choose a subtopic →Past experiences, up to now, vs past simple, simple vs continuous
Choose a subtopic →going to / present continuous / will, future continuous, future perfect, present simple for schedules, was going to / be to / about to / due to
Choose a subtopic →Nouns, articles, demonstratives
Choose a subtopic →Place, movement, time, function, fixed phrases
Choose a subtopic →my/mine, myself, some/any, much/many, each/every
Choose a subtopic →-ed/-ing forms, adjective order, comparatives, adverbs
Choose a subtopic →More topics coming soon — conditionals, passive voice, modal verbs…
"Duolingo tells me I'm wrong but never explains why"
— #1 complaint in App Store reviews of language learning apps
"I've been learning English for years and still mess up articles"
— Articles are among the last grammar features fully acquired, even at C1+ level (Cambridge University Press)
"I want to focus on one thing, not jump between random topics"
— Only 2% of education app users return after 30 days (Adjust Global App Trends 2024)
Articles? Prepositions? Tenses? Pick the topic that trips you up.
Fill gaps, fix errors, choose options. Not just the same exercise over and over.
Every wrong answer gets a clear, contextual explanation. Learn why, not just what.
Yes. You can practice all available exercises without signing up or paying. We offer free grammar exercises with instant feedback on every answer. Spaced repetition is already built in. When we launch the full version, there will be a premium tier with more topics.
Satori is designed for English learners at A2–C1 level (pre-intermediate to advanced) who want to master specific grammar topics. It's especially useful if you're preparing for IELTS, TOEFL, or Cambridge exams, or if you're frustrated with apps that don't go deep enough on grammar.
Duolingo teaches general language skills through gamification. Satori focuses specifically on grammar — you choose one topic (like articles or prepositions) and drill it with varied exercises until it clicks. Every wrong answer comes with a clear explanation of why it's wrong, which is Duolingo's most common user complaint ("tells me I'm wrong but not why").
Satori offers 54 grammar topics with over 1,700 exercises covering Articles, Nouns, Prepositions, Pronouns, Quantifiers, and the English present tenses. Each topic uses several exercise formats — all with instant feedback and explanations. More topics are added regularly.
No. You can start practicing immediately with no signup required. If you want to be notified when the full version launches (with more topics), you can optionally leave your email address.
Conditionals, passive voice, modal verbs are on the way.
Leave your email and you'll hear the day each one lands.
No spam. Just a launch notification.