Wordtune
Rewrites a sentence several ways so you can pick the tone you meant, and summarises long pages down to the parts worth reading.
What you'd use it for
Reworking a sentence you've already written into the tone you actually meant, without leaving the page you're typing in.
- Highlight a sentence and get several rewrites back in different registers - more formal, more casual, shorter, more confident
- Summarise a long page or document down to the parts worth reading
- Catch spelling and grammar errors as you type, unlimited on every plan including free
- Rewrite inline inside Gmail, Google Docs and most other text fields via a browser extension, rather than pasting into a separate app
The verdict
Worth having installed for the one thing it does well - turning a sentence that's grammatically fine but doesn't sound right into a handful of alternatives you pick from in place. It won't catch the errors Grammarly catches and it won't draft anything from a blank page the way ChatGPT will; it only reworks text you've already written. The free tier's daily cap is generous enough for occasional use, so paying only makes sense once rewriting is a daily habit.
What it costs
| Tier | Price | For | Includes |
|---|---|---|---|
| Basic | $0.00 | Occasional rewriting and grammar-checking, not daily use. | 10 rewrites and AI suggestions a day, 3 AI summarisations a month, unlimited spelling and grammar checks. |
| Advanced | $6.99/month billed monthly, or $4.89/month billed annually (roughly 30% off) | Someone rewriting text most days but not constantly. | 30 rewrites and AI suggestions a day, 15 AI summarisations a month, unlimited spelling and grammar checks. |
| Unlimited | $9.99/month billed monthly, or $6.99/month billed annually (roughly 30% off) | Heavy daily use across long documents. | Unlimited rewrites, AI suggestions and summarisations, vocabulary and clarity enhancement, premium support. |
Read from Wordtune's own pricing page on 25 Sep 2026. Vendors change prices without notice.
What you need to start
- A Wordtune account, created by email
- Chrome, Edge, Firefox or Arc - the extension does not run on Safari
- No credit card for the free Basic tier
A few minutes to install the extension, create an account and sign in; you're rewriting your first sentence straight after, no credit card needed.
Your first run Install the browser extension, sign in, then highlight a sentence on any page you're already writing in - Wordtune returns several rewrites in different tones within seconds, with nothing to draft or upload first.
Where it breaks
Browser extension plus a web editor; works inline inside Gmail, Google Docs and most text fields rather than requiring you to paste text into a separate app.
First entry in this reference. There is no previous check to compare it against.
When not to use it
Not for anyone who wants a tool to catch actual grammar and clarity errors - that's Grammarly's job, not this one. Not for drafting something from nothing, since Wordtune only reworks a sentence that already exists. And it's no use to a Mac user on Safari, where the extension - the whole point of the tool - isn't available.
Wordtune does one narrow thing and does it well: highlight a sentence, and it offers several rewrites in different registers — more formal, more casual, shorter, more confident — so you pick the version that actually matches what you meant to say. It’s closer to a thesaurus for whole sentences than a general writing assistant, and that narrowness is the point.
Built by AI21 Labs, a foundation-model company in its own right, Wordtune runs its own tuned model rather than being a thin wrapper on someone else’s API — which shows up as consistency in the kind of rewrite it offers, rather than the more open-ended (and sometimes overcorrected) suggestions you get from Grammarly’s AI features. Grammarly still leads on catching actual grammar and clarity errors; Wordtune leads on rephrasing something that’s grammatically fine but doesn’t sound right yet.
The free Basic tier is genuinely useful for occasional rewriting, not a crippled trial — 10 rewrites a day covers a fair number of emails. Advanced and Unlimited exist mainly for people rewriting constantly (recruiters, salespeople, anyone drafting outreach at volume), where the daily cap on Basic becomes the actual bottleneck rather than a soft nudge to upgrade.
Where this fits against ChatGPT or Claude: those can rewrite a sentence too, but require opening a chat, pasting text in, and copying the result back out. Wordtune’s advantage is that it lives inside the text field you’re already typing in — the workflow cost of using it is close to zero, which is why people reach for it dozens of times a day instead of a handful.
Alternatives
Writing & editingAppsGrammarly
An AI writing assistant that lives inside the apps you already type in, correcting and rewriting as you go rather than waiting for you to paste something into a chat box.
Assistants & chatAppsChatGPT
OpenAI's assistant in a browser tab, a desktop app and a phone app, where you ask questions, draft text, and hand it files or spreadsheets to work through.
Hemingway Editor
Flags long sentences, passive voice and hard-to-read paragraphs in your draft, then shows you plainly what to cut.
Writing & editingAppsProWritingAid
A deep style and readability report for long documents that flags repetition, pacing problems and clichés a spellchecker misses.
Get Wordtune
Buying the tool is not the hard part.
The ebook is about what to hand over, in what order, and how you find out when it goes wrong. One payment, no subscription.