Wordtune

Wordtune is an AI writing assistant focused on sentence-level rewriting and improvement — not generating content from scratch, but helping you say what you already mean more effectively. Highlight a sentence and it offers multiple alternatives: more casual, more formal, shorter, longer, or just different. Free tier gives 10 rewrites per day; Premium is $13.99/month (or $9.99/month billed annually) and includes unlimited rewrites, AI summaries, and the Spices feature for adding examples, emphasis, and statistics.

Ideal for non-native English professionals writing business emails, LinkedIn posts, or reports who need polished phrasing without sounding robotic. Also useful for marketers refining ad copy or email subject lines where word choice matters. The summarizer is handy for condensing articles and documents. The Chrome extension works directly in Gmail, Google Docs, and most web text fields.

Where it stops short: unlike QuillBot or ChatGPT, Wordtune doesn't generate new content — it only reworks what you give it. The free tier's 10 rewrites/day limit is genuinely frustrating for heavy users. And Premium at $13.99/month puts it in competition with Grammarly Premium, which has more features (plagiarism check, writing goals). Best used as a complement to Grammarly, not a replacement.