Do you really trust Gmails’s Spell Checker?
Think Gmail’s got every mistake covered? We put it to the test.
Did you know?
MerciApp corrects spelling and grammar mistakes that Gmail doesn’t even notice

Gmail only catches basic spelling & grammar errors.
MerciApp corrects spelling mistakes on over 90,000 common nouns and spots sophisticated grammar errors using advanced syntactic, semantic, and contextual analysis, even when the problematic words are far apart in a sentence.

Gmail relies on statistics. MerciApp uses analytical algorithms and real linguistic expertise.
Gmail flags the mistakes it sees most often among its users, but MerciApp goes much further. Our engine is built on true language-processing technology that understands the syntax and structure of the sentences you write.
Unlike Gmail, whose spellchecker is trained on texts found online (many of which contain errors), MerciApp is powered by a curated corpus reviewed by professional linguists.
On top of its advanced analysis engines, MerciApp maintains a massive database of corrected texts — more than 250 million words — to continuously improve its detection models. Every day, MerciApp learns to understand more complex sentence structures, reducing false positives to an absolute minimum.
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Correction |
Explications |
Correction |
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Suspicious past participles |
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Spelling mistakes |
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Errors in dates |
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Suspicious verb conjugations |
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Incorrect past participle agreement |
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Unnecessary plural pronouns |
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Incorrect subject–verb agreement |
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Typo detection |
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Incorrect noun phrase agreement |
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Likely word confusions |
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Homophone confusions |
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Don’t take our word for it. See what our customers say.
Over 5,000 companies rely on us to improve the quality of their writing.

