ProWritingAid vs QuillBot: pricing, features and which to choose

ProWritingAid began in London in 2013 after founder Chris Banks built software to help with a novel. The company says it remains independent and has taken no venture capital. It now says the service helps millions of creative and business writers around the world. Its stated audience includes novelists, business writers, teachers, students, and English-language learners. The product has expanded beyond spelling and grammar into a writer’s toolkit covering planning, drafting, line editing, story critique, and publishing preparation. Its central identity is a writing assistant that combines detailed diagnostics with story-focused feedback, while leaving decisions about revisions to the writer. The company presents storytelling, practice, and feedback as central to its approach.

A typical workflow can begin in the Web Editor, where users upload or paste a document, or through Desktop Everywhere for Windows or Mac. Browser extensions for Chrome, Edge, and Firefox provide access on websites and webpages, while integrations include Microsoft Word, Google Docs, Scrivener, Apple Notes, Notion, Apple Pages, and Atticus. Reports cover grammar, spelling, punctuation, style, readability, sentence structure, sentence length, repetition, consistency, clichés, dialogue, pacing, sensory detail, and word choice. Rephrase offers alternative wording, Word Explorer and Thesaurus support word selection, and customizable settings let users manage terminology and preferred rules. Story tools include Story Canvas, Chapter Critique, Manuscript Analysis, Plot Analysis, Character Analysis, Virtual Beta Reader, and Marketability Analysis.

ProWritingAid suits writers who want extensive manuscript diagnostics and story feedback, though its many reports can require time, interpretation, and editorial judgment. It is less suitable for people wanting only a minimal correction layer, a general-purpose text generator, or primary support for languages other than English. Grammarly is a closer editorial fit for everyday workplace correction, LanguageTool for multilingual checking, and AutoCrit for fiction-focused manuscript work. ProWritingAid says analyzed text is deleted after processing, except documents explicitly saved in its encrypted Web Editor, and says customer writing is not used to train its models. Its AI documentation also says users retain rights to their writing, while publishers, schools, contests, and clients may set their own AI-use rules. Pick it when report depth and story-level feedback matter most.

QuillBot is an AI-powered writing companion founded in 2017 by University of Illinois computer science students Rohan Gupta, Anil Jason, and David Silin. Learneo, formerly Course Hero, acquired QuillBot in September 2021, and Gupta leads Learneo’s writing vertical. Learneo’s leadership page describes QuillBot as having more than 30 million monthly active users. The product has grown from its original writing-improvement focus into a suite covering paraphrasing, grammar checking, translation, summarization, citation generation, plagiarism checking, AI detection, AI chat, AI humanization, and image generation. Its core audience includes students, language learners, researchers, professionals, and other writers who want assistance revising or understanding text. It remains a writing service rather than a general-purpose publishing application.

A typical QuillBot workflow begins with text entered or uploaded through its web tools, browser extensions, desktop app, or mobile experience. Users can paraphrase text in more than 10 modes, including Academic and Simple, adjust synonym use, check grammar, summarize documents, translate between languages, or generate citations. The AI Detector analyzes text for patterns associated with AI writing and returns a percentage estimate, while Premium users can download full reports. The service also lists plagiarism checking, AI Humanizer, AI Chat, and AI Image Generator among its tools. These functions operate as connected but distinct writing utilities. Users should review every rewrite for meaning, source accuracy, citation completeness, and appropriate attribution before submitting or publishing the result.

QuillBot’s main caveat is that rewriting can alter nuance, while AI detection cannot establish authorship. Its privacy materials say inputs and usage data may support service improvement and personalization. For browser extensions version 4.37.0 or later, text storage is on by default, with controls to opt out of storage and model training; Team inputs are excluded from training by default. LanguageTool, Grammarly, and Wordtune are direct alternatives for writing assistance, with LanguageTool a close fit for multilingual correction and Grammarly a close fit for broad workplace writing. These are editorial fit comparisons, not claims about identical features. Pick QuillBot if paraphrasing, translation, citations, and study-oriented writing tools matter more than continuous workplace correction.