Review Grammarly: Grammarly is the smartest English writing assistant

Detailed Review

Grammarly is one of Ukraine's greatest technology success stories — founded by three friends in Kyiv in 2009, before moving its headquarters to San Francisco. Max Lytvyn, CEO, was once an English teacher and deeply understood the pain of language learners who wanted to write correctly. From a simple grammar checker, Grammarly has evolved into the world's most comprehensive AI writing assistant.

Grammarly reaches 30 million daily users and 50,000 enterprise customers — an impressive figure that shows the product is genuinely useful, not just trendy. The extension runs everywhere you type: Gmail, Google Docs, LinkedIn, Slack, Office 365 — no copy-pasting required. Real-time suggestions appear as you type.

Grammarly Business with a custom Style Guide for enterprises ensures the entire team writes in the same brand voice. Snippets — shared text templates for the team — save hours of rewriting the same emails over and over. Analytics show each employee's writing score over time.

Strengths

• Runs in the background on every website and app — email, Google Docs, Twitter — no need to open Grammarly separately
• GrammarlyGO rewrites entire paragraphs to a desired tone: formal, friendly, confident — in one click
• Plagiarism detector compares against billions of web pages — essential for students and content creators
• Clarity score and readability suggestions help write shorter, clearer, and more persuasive emails

Areas for Improvement

• Free plan only checks basic grammar — advanced style suggestions are locked behind Premium
• Occasionally suggests changes that don't fit your personal writing voice — you may need to disable suggestions per case
• No Vietnamese language support — only useful for users writing content in English

Verdict

Grammarly is an excellent choice for anyone needing a powerful tool in the AI Tool category. Founded in 2009 by Max Lytvyn, Alex Shevchenko, Dmytro Lider — three Ukrainians, this product has undergone years of development and continuous improvement. With a rating of 8.9/10, it ranks among the best in its segment. We encourage you to try the free version before deciding to upgrade.