Grammar Guru review
A low-cost grammar assistant with strong Windows tools but limited platform and language coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Grammar Guru is a freemium grammar checker and writing assistant for individuals, small teams, and larger organizations. Its Chrome and Edge extensions check grammar, spelling, and punctuation in real time across websites and text fields, including Gmail and Google Docs. It also suggests clearer, more concise writing and can rewrite text in different tones and styles. A native Windows app adds offline operation, email drafting, summarization, list formatting, and translation, making the product especially relevant to Windows users who want more than basic correction.
Pricing is straightforward for individual buyers. The Free plan costs $0 forever and includes basic grammar checking, five daily rewrites, a 500-character limit, and support across all websites. Standard costs $1 per month when billed monthly, or $0.83 per month when billed annually, and adds unlimited rewrites, advanced grammar rules, all writing styles and tones, batch processing, and priority support. The Windows App has the same monthly and annual prices and includes unlimited rewrites plus the Windows-specific writing tools. Enterprise adds team management, usage analytics, custom integrations, dedicated support, and an SLA guarantee. A 30-day refund period and no card requirement for trials reduce purchase friction.
The platform fit favors browser-based work and Windows desktops. Listed integrations include Gmail, Google Docs, Outlook, Office 365, and social media websites, while deployment is through a desktop app and browser extension. The Windows App is the clearest differentiator because it supports offline use, although browser-based AI services require an internet connection. Grammar Guru suits budget-conscious Windows users, browser-heavy writers, and teams needing rewriting or batch processing without a high entry price. Buyers needing mobile access or broader platform and language coverage should consider an alternative.
Grammar Guru pros and cons
- Where it wins
- Real-time grammar, spelling, punctuation, and style suggestions
- Windows app adds offline writing and practical AI tools
- Free plan and $1 monthly entry price support low-cost adoption
- Where it doesn't
- No mobile app is available
- Browser-based AI services require an internet connection
- Platform and language coverage are limited
Grammar Guru fact sheet, pricing and score →
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