Wordtune is a refined product with excellent rewrite quality. If you want similar functionality without an ongoing subscription, with your own AI keys and customizable rewrite styles, PlugThis lets you build it.
Wordtune is an AI-powered writing assistant that rewrites sentences in different tones, lengths, and styles. It runs as a Chrome extension and works inline in text fields across the web.
Pricing: Wordtune is freemium. Free tier limits the number of daily rewrites. Paid plans start at around $9.99/month for unlimited rewrites and additional features.
Audience: Professional writers, non-native English speakers, students, and anyone who edits a lot of text.
| Feature | PlugThis | Wordtune |
|---|---|---|
| Pricing | From $29/month | $9.99–$24.99/month |
| Free tier | Yes — try before paying | Yes — limited rewrites/day |
| Rewrite quality | GPT-4 quality (you control the prompt) | Refined Wordtune model |
| AI provider | Your own OpenAI/Anthropic keys | Wordtune-managed |
| Source code | Full source | Closed |
| Custom rewrite styles | Add as many as you want | ~6 built-in styles |
| Privacy | Direct to your AI provider | Wordtune servers |
| Where it works | Any text field on any site | Most text fields, occasional gaps |
Build time: Under 5 minutes
What you get:
Build a Chrome extension called "Smart Rewrite" that adds AI rewriting to any text field. The extension should: (1) detect text selection inside any input, textarea, or contenteditable element on any webpage, (2) show a small floating button near the selection with a "Rewrite" icon, (3) on click, show a popup with rewrite options: rephrase, shorten, expand, formal, casual, professional, simpler English, fix grammar, (4) when an option is chosen, send the selected text plus the chosen style to OpenAI GPT-4 and replace the selection with the AI response, (5) include keyboard shortcut (Cmd+Shift+R) to trigger rewrite on the current selection, (6) options page for API key entry and default rewrite style. Permissions: storage, activeTab. Host permissions: <all_urls>, https://api.openai.com/*. Manifest V3.
$9.99–$24.99/month subscription
From $29/month + ~$5–15/month for OpenAI usage
Vs Wordtune Premium ($9.99/mo), PlugThis breaks even in 9 months. After that, you save ~$120/year ongoing.
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Paste the prompt above into PlugThis and ship your custom version in minutes.
Disclosure: PlugThis is a competing product to Wordtune. This comparison is intended for users actively evaluating both options. We last verified the Wordtune information on this page on 2026-05-14. Pricing and features may have changed since — please check the Wordtune website for current details.
Wordtune's model is fine-tuned for rewriting specifically and is excellent at it. GPT-4 is more general but produces high-quality rewrites with the right prompt. For most users the difference is unnoticeable. For professional writers obsessing over nuance, Wordtune may still feel smoother.
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Yes. Just add a new option in the popup with your custom prompt. Examples: "Make it sound like a McKinsey consultant," "Rewrite as if explaining to a 10-year-old," "Translate marketing speak to plain English."
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In most. Some web apps with custom keyboard handling (like Google Docs in some configurations) intercept shortcuts before extensions can. The button-based fallback always works.
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