Tools · § 04 — Grammar Checker
Grammar Checker
Hand the tool a sentence you wrote. Get back a mistake list with explanations — not a wall of red ink. Patterns the model already knows: 了 vs 的, 把-constructions, measure words, 把 series, 是 vs 有, and a dozen more.
Mistakes with reasons, not vibes.
Your Chinese
Your level
Why this beats the alternatives
The Grammar Checker focuses on the recurring failure modes of English-speaking learners: 了 vs 的, 把-constructions, measure words, word order. Each explanation references a real grammar point in the Knowledge Base.
Where your data goes
The text you submit is sent to the LLM provider configured in .env for analysis. If you want a private alternative, see the v1 API to self-host.
Coming soon · Social Meaning Coach
Literal meaning is only half the story. When your boss says 「这个事情你再想想」 — is it advice, or an order?
Free during early access · No card required
Adjacent tools
Pinyin Converter
Convert Chinese text to pinyin — tone marks or numeric tones.
Character Decomposer
Break a character into semantic + phonetic components.
Sentence Analyzer
Tokens · grammar · HSK level · difficulty, in one shot.
Reading Level
Estimate HSK level of any text + rewrite to a target.
HSK Level Test
A placement test covering HSK 1–2.
Measure Words
Find the right classifier (量词) for any noun.