Grammarly is the default in business writing. QuillBot grew up as a paraphraser and has become a full writing toolkit.
Grammarly is the better polish and tone tool. QuillBot is the better paraphraser, summariser, and student tool.
Everywhere writing polish vs focused rewriting toolkit
Grammarly: Grammarly (grammarly).
QuillBot: QuillBot (quillbot).
Both have useful free tiers and paid feature unlocks. Grammarly's value compounds across daily apps; QuillBot's is easier to justify for frequent paraphrasing, summarising and citation-related study work.
In-flow correction: Grammarly. Grammarly follows writers across browsers and workplace applications.
Paraphrasing and summarising: QuillBot. QuillBot offers more explicit rewrite modes and study-oriented utilities.
Professional tone feedback: Grammarly. Grammarly is stronger as an always-on business writing coach.
Grammarly's constant suggestions can over-standardise a distinctive voice.
QuillBot invites over-rewriting and still requires source attribution and human review.
Polish email and documents throughout the day: Grammarly. Grammarly has the broader ambient workflow.
Condense or restate source material: QuillBot. QuillBot provides focused transformation controls.
Pick Grammarly if you want one assistant across email, docs, and Slack.
Pick QuillBot if you paraphrase, summarise, or rewrite for a living or for school.
Yes, and many writers do. Draft with QuillBot, polish with Grammarly.
If writing is a meaningful share of your work, yes. The free tier covers spelling; Pro is where tone and clarity live.
AI detection is unreliable in either direction. Do not rely on either tool to disguise AI writing as human.