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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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Writers Copilot
✓ verifiedFree
A free browser-based AI editor that suggests inline improvements to pasted text via a chat-driven review workflow.
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LanguageTool
✓ verifiedFreemium
AI grammar and style checker with paraphrasing, available across browsers, email, office apps and as an API.
7.6M visits/mo5.0K saves
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Scribbr
✓ verifiedFreemium
Academic writing platform combining human and AI proofreading, plagiarism checking, and citation generation for students.
7.3M visits/mo3.2K saves
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Smart Keys for iOS
✓ verifiedFree
An AI-enhanced custom keyboard for iOS and Mac that fixes grammar, adjusts tone, and translates text in one tap.
1.4K visits/mo
Pricing
No public pricing
No public pricing
No public pricing
No public pricing
Core features
- ✦Paste-and-edit workflow with no registration required
- ✦Chat-based requests for edits, feedback, or rewrites
- ✦Inline preview of suggested changes before accepting
- ✦Focused chat threads on specific highlighted sections
- ✦Custom instructions for style and word-limit preferences
- ✦Grammar and spelling checking
- ✦Style and tone suggestions
- ✦Paraphrasing tool
- ✦Browser, email and office add-ons
- ✦Proofreading API
- ✦Business/GDPR-conformant options
- ✦Plagiarism checker using university-grade detection software
- ✦AI content detector for flagging AI-generated text
- ✦Human proofreading with roughly 3-hour turnaround
- ✦AI-proofreading that reviews a full paper in minutes
- ✦Citation generator supporting APA, MLA, Chicago, and more
- ✦Free paraphrasing, summarizing, and grammar-checking tools
- ✦System-wide custom AI keyboard for iOS and macOS
- ✦One-tap grammar and spelling correction
- ✦In-line translation between languages
- ✦Tone and style ('flair') rewriting of messages
- ✦Selectable library of task-specific AI keys
- ✦Coding-oriented keys such as explain, comment, and optimize code
Use cases
- →Getting quick AI feedback on a pasted draft
- →Requesting a rewrite of a specific paragraph via chat
- →Editing content interactively without leaving the browser
- →Applying custom style or length constraints to AI suggestions
- →Proofread and correct writing
- →Rephrase sentences
- →Maintain consistent tone across a team
- →Students getting a paper proofread before submission
- →Checking a thesis or dissertation for unintentional plagiarism
- →Generating accurate citations in a required academic style
- →Detecting whether a document may read as AI-generated
- →Quickly fixing grammar while texting or emailing
- →Translating messages on the fly in chat apps
- →Adding stylistic flair to casual writing
- →Summarizing or cleaning up code snippets from a keyboard shortcut
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