A paraphraser helps explore another way to express an idea. It is useful for your own drafts, but a wording change does not replace the need to understand a source or give it credit.
Compare a short passage with its revisions. Check factual meaning, technical terms, tone and whether the new sentence actually fits the paragraphs around it.
QuillBot helps revise wording, check grammar and summarize material. It is useful for improving a draft you already understand, especially when a sentence is awkward or a passage needs to be shorter.
Work on one passage at a time. Compare the revision with the original meaning and keep technical terms, quotations and source attribution intact.
Wordtune offers suggestions for rewriting and refining sentences. It works well as an editing aid when the ideas are yours but the wording needs to be clearer, shorter or better suited to the reader.
Use it on a paragraph with one clear point. Review several suggestions, then read the whole paragraph aloud to make sure the flow still sounds consistent.
Bring the same example to each tool you compare. Keep the original input and the edits you make to the result, so you can see where each option helps. Check the exported output in the next step of your work, rather than judging only the preview inside the application.
Before choosing a plan, check the product website for current access, usage limits and supported integrations. A useful shortlist matches the task you need to finish and the way you will reuse the result.