AI Grammar Checker

Free · Built into Hintword

Fix grammar, spelling, and clumsy phrasing in one click — without leaving your document. Hintword's grammar checker is built into its notes editor and shows corrections side by side with your original, so you see exactly what changed before accepting it.

How it works

1. Write in a Hintword note — everything autosaves to your device as you type.
2. Run the grammar check. The AI reviews your text and produces a corrected version.
3. Compare and accept. Original and corrected text appear side by side; replace your note's content in one click, or keep your version.

What it catches

• Grammar and agreement errors ("the results was…")
• Spelling and typos, including the ones spellcheck misses because they're real words
• Punctuation slips — comma splices, stray apostrophes
• Awkward phrasing that's technically correct but reads badly

Why check grammar in your notes app?

Grammar websites make you take your text to them. When checking happens where you write, proofreading stops being a separate errand — draft, check, fix, done, and the note is already saved and organized. Need more than corrections? The same editor's AI can rephrase, change tone, or summarize the text too.

Hintword is offline-first: your writing is stored on your device and syncs only when you press the button — a storage model most online grammar tools can't offer.

Free, no word limits

Hintword is free, including AI actions. Sign in with Google and start writing — grammar checking, a paraphraser, a summarizer, tab collections, and a Kanban board come with it.