Grammarly
AI writing assistant for grammar, tone, clarity, and rewrites.
WritingFreemium
AI rewriting and editing assistant that suggests clearer, shorter, or more formal versions of sentences in email, docs, and the browser.
Overview
Wordtune is a writing assistant from AI21 Labs that rewrites sentences, adjusts tone, shortens or expands text, and summarizes long documents and web pages. It runs as a Chrome extension, a web editor, and add-ins for Gmail, Google Docs, Microsoft Word, and Outlook, so it works inside the apps where a small team already writes customer emails, quotes, and listings. Users highlight a sentence, pick from several rewrite options, and keep their own voice rather than generating whole drafts. The Summarizer condenses articles, PDFs, and YouTube transcripts into bullet points. For an online store or service business it fits as a daily editing layer for owner-written content: product descriptions, review replies, and outreach. The free plan allows ten rewrites a day, which is enough to trial but too tight for heavy use. One caveat is that rewrite quality is strongest in English, and the extension can be slow on long documents.
Writing assistant
Polishing customer emails, quotes, and web copy sentence by sentence.
1 week to value · Low effort · Low risk · low
Copywriting
Tightening product descriptions and ad lines that already exist.
1-2 weeks to value · Low effort · Medium risk · low
General assistant
Summarizing supplier PDFs and long articles into bullet points.
1-2 weeks to value · Low effort · Medium risk · low
Verdict
Pays back on
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AI writing assistant for grammar, tone, clarity, and rewrites.
Paraphrasing, grammar, summarizing, and translation toolkit with a browser extension and Word and Docs add-ins.
Grammar and style editor with 20+ reports on readability, repetition, and pacing, plus AI rephrase and critique tools.
Not paid placement. Verified means the listing passed our current editorial checks; it does not guarantee fit for every workflow.