Master English Grammar.
One Topic at a Time.

Stop guessing. Start understanding.
Pick a grammar topic that frustrates you. Drill it until it clicks.

Try Free Exercises

Sound familiar?

"Duolingo tells me I'm wrong but never explains why"

"I've been learning English for years and still mess up articles"

"I want to focus on one thing, not jump between random topics"

How Satori works

一

Choose your weakness

Articles? Present Perfect? Reported Speech? Pick the topic that trips you up.

二

Drill with variety

Fill gaps, fix errors, choose options. Not just the same exercise over and over.

三

Understand your mistakes

Every wrong answer gets a clear, contextual explanation. Learn why, not just what.

Choose a topic to practice

Free exercises — no signup required

A2–B2

Articles: A, An, The

When to use a, an, the — or nothing at all

Start practicing → B1–B2

Present Perfect vs Past Simple

I did vs I have done — finally get it right

Start practicing → B1–C1

Reported Speech

She said, he told me — master indirect speech

Start practicing →

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More topics. More exercises. Spaced repetition.
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