How to Build Your Own Grammarly
Replace Grammarly with a custom build. AI-powered writing assistant that helps you write clear, mistake-free content.
Build Difficulty: 5/5
Build a working replacement in a weekend with AI tools
Estimated Timeline
Based on 42 features at Weekend Project difficulty, expect about One weekend with AI-assisted development.
Recommended Tech Stack
Full-stack React framework with API routes and server components
PostgreSQL database, auth, and real-time subscriptions
Utility-first styling for rapid UI development
Key Features to Replicate
Top features across 8 categories. See all 42 features
Writing(18 features)
Identifies unclear phrases and suggests improvements for better readability.
Identifies wordy phrases and suggests more concise alternatives.
Ensures consistent terminology, hyphenation, and style throughout your document.
Allows users to adjust the formality level of their writing for different audiences.
Provides alternative ways to rewrite entire sentences for improved clarity and impact.
+13 more in this category
Analytics(5 features)
Measures readability score and provides suggestions to improve reader engagement.
Visual dashboard showing progress toward writing goals and improvement areas.
Calculates readability level and suggests improvements for target audience comprehension.
Receive weekly summaries of your writing statistics and improvement metrics.
Tracks writing metrics including word count, readability score, and suggestion categories.
Compliance(3 features)
Detects readability issues and suggests improvements for inclusive communication.
Identifies potentially biased language and suggests more inclusive alternatives.
Checks your writing against billions of web pages and documents to detect potential plagiarism.
Integration(3 features)
Developer API for integrating Grammarly's correction capabilities into third-party applications.
Works across the web to provide writing assistance in emails, social media, and online documents.
Standalone application for Mac and Windows that works with any text field or document.
Personalization(3 features)
Add industry-specific terms and proper nouns to prevent false corrections.
Allows you to set writing goals like audience, formality, and domain to personalize suggestions.
Detects your native language and adjusts suggestions accordingly for non-native English speakers.
Productivity(3 features)
Access and restore previous versions of your documents in Grammarly Editor.
Customizable keyboard shortcuts for quick access to frequently used features.
Pre-built templates for common writing tasks like emails, resumes, and essays.
Administration(1 features)
Manage team members, licenses, and usage for organizations using Grammarly Business.
Collaboration(1 features)
Share documents and receive feedback from others within Grammarly Editor.
Cost Calculator
Keep Paying Grammarly
Build It Yourself
Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 42 features at very easy complexity.