Rewrite your text without leaving the page you are typing on
Professional tone for the email, brutal honesty for the group chat. Neither should need a separate tab open.
Feature comparison
Key Insights
The paid rewriting tools live in a sidebar or a separate app. TextPert works from the right click menu on the text you already have selected.
The short version
All three fix or rewrite text, aimed at different jobs. TextPert works inline through the right click menu. Covers a wide range from a professional rewrite to a deliberately savage one, which the other two do not attempt. Grammarly is the everyday grammar and tone checker most people already have installed, strong on correctness and consistency. QuillBot leans into paraphrasing and summarising longer passages rather than one off rewrites of a sentence or a short reply. For a quick edit on a comment or a message, a dedicated writing app built around essays is more machinery than the job needs.
What actually separates them
The difference is reach and tone. TextPert runs from the context menu on any editable text field, so a rewrite happens where you are typing rather than in a separate panel. It offers tones from professional to intentionally savage that a grammar checker will not produce. Grammarly focuses on correctness and a consistent professional voice across everything it touches. QuillBot is built around paraphrasing whole paragraphs, which suits an essay or a report far more than a one line reply typed in a hurry.
What you get free
All three have a free tier. TextPert's free tier covers the everyday rewrites rather than gating the tones behind a paywall. Grammarly's free plan handles basic grammar and reserves tone and clarity suggestions for premium. QuillBot limits the paraphrasing modes and word count on the free plan.
Strengths and weaknesses
Verdict

Autocorrect on steroids

TextPert wins for someone who wants text rewritten inline, from a professional pass to a savage one, without a subscription.
Who should pick what
Someone who wants a quick inline rewrite, from professional to savage, without opening another tab should install TextPert. A person who wants steady grammar and tone checking across everything they write should stick with Grammarly. Someone paraphrasing essays or long form writing should use QuillBot.
Absolute beast