Stop guessing. Start understanding.
Pick a grammar topic that frustrates you. Drill it until it clicks.
"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? Present Perfect? Reported Speech? 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.
Free exercises — no signup required
| Satori | Duolingo | Grammar websites | |
|---|---|---|---|
| Focus on one grammar topic | Yes | No — random mix | Yes |
| Explains why you're wrong | Yes — every answer | Rarely | Rarely |
| Multiple exercise types | 3 types per topic | 2–3 types | Usually 1 (gap-fill) |
| Modern, mobile-friendly | Yes | Yes | Most from 2005 |
| Free to try | Yes — no signup | Free with ads | Yes |
Satori offers 36 interactive exercises across 3 grammar topics, with 3 exercise formats (fill-in-the-blank, multiple choice, error correction) and contextual explanations for every answer. The global language learning app market is valued at $6.34 billion (2024) and projected to reach $24.39 billion by 2033 (Grand View Research), yet no major app focuses on deep, topic-specific grammar practice with contextual feedback.
Yes. You can practice all available exercises without signing up or paying. We offer free grammar exercises with instant feedback on every answer. When we launch the full version, there will be a premium tier with more topics and spaced repetition.
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 present perfect) 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").
Currently available: Articles (a, an, the), Present Perfect vs Past Simple, and Reported Speech. Each topic has 12 exercises in 3 formats. More topics — including conditionals, will vs going to, passive voice, and modal verbs — are coming soon.
No. You can start practicing immediately with no signup required. If you want to be notified when the full version launches (with more topics and spaced repetition), you can optionally leave your email address.
More topics. More exercises. Spaced repetition.
Leave your email — we'll notify you.
No spam. Just a launch notification.