Grammarly is an AI-powered writing assistant that improves grammar, clarity, tone, and style across emails, documents, and web content.
Grammarly is a leading writing companion that checks spelling, grammatical errors, structural clarity, and writing tone across apps.
Grammar Assistant: Real-time spelling, punctuation, and style corrections.
Tone Detector: Evaluate if emails sound professional, confident, or friendly.
✔ Natively integrates across web, email, desktop, and mobile keyboards.
✖ Advanced vocabulary suggestions require premium subscriptions.
| Plan | Type | Price | Details |
|---|---|---|---|
| Free | Freemium | Free | Spelling, grammar, and basic punctuation alerts. |
| Premium | Subscription | $12/month | Full clarity edits, tone updates, and style suggestions. |
Yes, Grammarly provides a dedicated Chrome Extension that overlays corrections in Google Workspace documents.
| Key Features |
Grammarly
Active | 
NotebookLM (Google) | 
Duolingo | 
Khanmigo |
|---|---|---|---|---|
| Review Score | 9.5/10 | 9.7/10 | 9.4/10 | 9.3/10 |
| Pricing Model | $12/month (billed annually | $0 - $249 | $12.99/month or $83.99/year | $4/month |
| Free Plan | ✔ Yes | ✔ Yes | ✔ Yes | ✖ No |
| Starting Cost | Freemium | Free | Free | Free |
| Details Page | Active Page | Compare | Compare | Compare |
NotebookLM is Google's AI-powered research assistant that converts your documents into podcast-style audio discussions, video overviews, study guides, and interactive content with source-grounded responses.
Duolingo is a gamified language learning platform that uses AI and bite-sized lessons to teach over 40 languages effectively.
Khanmigo is an AI-powered tutoring assistant by Khan Academy that helps students and teachers with learning, guidance, and feedback.
QuillBot is an AI writing assistant with paraphrasing, grammar checking, summarization, AI detection, plagiarism checking, humanizing, translation, citations, and writing apps.
Speechify is an AI text-to-speech and voice productivity platform for listening to documents, PDFs, websites, emails, books, AI podcasts, voice typing, and voice AI assistant workflows.
Replit is an AI-powered cloud development platform for building, collaborating, deploying, and hosting apps in the browser with Replit Agent, workspaces, databases, and app publishing.
Quizlet is an AI-enhanced study tool that helps students learn through flashcards, quizzes, and interactive learning modes.
Notion AI is an all-in-one workspace combining notes, databases, wikis, and project management with autonomous AI agents that execute multi-step tasks across connected tools.
