What Are Resident Proofreading Tools
Grammarly and ProWritingAid are tools that reside in the browser or editor and proofread English as you write. Unlike pasting text into a chat AI, they show red/blue underlines while you type, preventing "mistakes you don't notice yourself." This article organizes their differences, pricing, and usage, and how to combine them with chat AI, for beginners. Prices change often, so check the official site before subscribing (below is a rough guide as of May 2026).
Grammarly
Features
- The most widely used English-proofreading tool
- Auto-check spelling/grammar/punctuation
- Conciseness/clarity suggestions, tone detection (formal / casual)
- Also includes AI generation features like rewriting and summarizing
Where Usable
- Browser extension (Gmail, X, LinkedIn, Notion, etc.)
- Microsoft Word / Outlook integration
- Desktop app (Mac / Windows), mobile keyboard
Pricing Guide
The free plan offers basic spelling/grammar checks and a set number of AI uses per month. The paid "Pro" is around USD 12/mo annual, or about USD 30/mo monthly (the former "Premium" was renamed "Pro"). Organization plans are consolidated into a custom-quoted enterprise plan.
ProWritingAid
Features
- Deep analysis for long-form/creative writing (20+ reports: readability, repetition, sentence length, etc.)
