QuillBot pioneered the paraphraser-with-synonym-controls. ParaphrasePro brings that same control set into every text box on the web — no copy-pasting into a web app — for $2.99/month instead of $9.95, or free with your own API key.
| ParaphrasePro | QuillBot Pro | |
|---|---|---|
| Works inside any standard text box | ✓ | Web app + limited extension |
| Synonym slider / change level | ✓ | ✓ |
| Click-a-word synonyms | ✓ | ✓ |
| Freeze words | ✓ | ✓ |
| 3 variants per rewrite | ✓ | ✗ |
| Custom modes (your own prompts) | ✓ | ✗ |
| Grammar check | ✓ | ✓ |
| In-place translation (20 languages) | ✓ | ✓ (web app) |
| Bring your own API key | ✓ | ✗ |
| Price for the paid tier | $2.99/mo | $9.95/mo |
| Text length per rewrite | 12,000 characters, free and Pro alike | 125 words free / limits by plan |
QuillBot bundles extra academic tools — a summarizer web app, citation generator, and plagiarism checker. If you live in those tools (especially as a student writing papers), the bundle can be worth it.
If the copy-paste loop into a web app is the thing you hate, ParaphrasePro removes it: select text in any text box — X, LinkedIn, ChatGPT and the rest — click the bubble, insert. You keep QuillBot-style controls (synonym level, freeze words, click-to-swap) and add variants, custom modes, and model choice. Every plan takes up to 12,000 characters per rewrite, and the bring-your-own-key option makes it genuinely free.