Wordtune
An AI rewriter that rephrases sentences to sound clearer and more natural.
Wordtune (by AI21 Labs) focuses on sentence-level rewrites: rephrase, shift tone between casual and formal, and shorten or expand, plus summarization and limited generative AI. Its distinctive UX offers rewrite suggestions rather than red-underline grammar correction, which makes it a favourite for polishing tone.
Key features
- Sentence rewrite suggestions
- Tone shift (casual/formal) and shorten/expand
- AI summarizer
- Spelling and grammar checks
Pros
- Excellent rewrite and rephrasing UX
- Cheap annual pricing
- Good tone variety
Cons
- Free tier daily-capped (10 rewrites)
- Narrower than a full grammar suite
- Best features behind the Unlimited tier
Pricing
Free; Advanced US$4.89/mo (annual)
| Free | $0 |
| Advanced | $4.89/mo |
| Unlimited | $6.99/mo |
Annual rates (~50% off monthly: $6.99/$9.99). Free tier capped at 10 rewrites/day. 3-day trial on paid tiers. Verified Jun 2026.
Models
Proprietary (AI21)
Platforms
webbrowser-extworddocsmobile
Good for
CopywritingAcademicEmail
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Last reviewed 2026-06-23. Categories: Editing, Grammar.