Grammarly
Make your communication clear and effective, wherever you write
R2 Copilot
R2 Copilot — The First-Ever Privacy-Conscious AI Assistant
Updated February 2026
| Grammarly | R2 Copilot | |
|---|---|---|
| Rating | 4.7★ | 5.0★ |
| Reviews | 56 | 18 |
| Pros | 14 | 15 |
| FactScore™ | 82.7 | 63.9 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Grammarly — Pros
Grammar and style checking Writing style improvement AI-powered assistance Convenient interface Spelling and punctuation correction Browser integration Clarity improvement Free tier Cross-platform compatibility Real-time suggestions Sentence structure improvement Tone detection Vocabulary enhancement Plagiarism checkerBoth tools — Pros
—Only in R2 Copilot — Pros
Fast performance Privacy features Security measures User-friendly interface Accurate responses Microsoft Office integration Complex query understanding Data control Data retention management Encryption End-to-end encryption Personalized recommendations Privacy policy Secure data handling TransparencyOnly in Grammarly — Cons
Intrusive suggestions Convenient interface CPU and GPU usage Google Docs support Limited language support PriceBoth tools — Cons
—Only in R2 Copilot — Cons
—Details
| Grammarly | R2 Copilot | |
|---|---|---|
| Categories | Writing assistants | Writing assistants, Prompt Engineering Tools |
| Platforms | Web · iOS · Android | Web |
| Became Popular | May 28, 2014 | January 30, 2024 |
| Website | www.grammarly.com | r2copilot.ai |
Who Should Pick Which?
Choose Grammarly if...
- Grammar and style checking
- Writing style improvement
- AI-powered assistance
Choose R2 Copilot if...
- Fast performance
- Privacy features
- Security measures
With a FactScore™ of 82.7 vs 63.9, Grammarly leads in community reception. Grammarly uniquely offers Grammar and style checking and Writing style improvement, while R2 Copilot stands out for Fast performance and Privacy features.
What Users Say
Grammarly
I write a lot - for documentation, articles and website copy. Grammarly helps to keep me on point with spelling, grammar, and anything else I might be missing while I'm pumping out content.
Great app that I use every day. I never write anything important without it. The only thing is that some suggestions may be too finicky.
Great added value to your daily life as a content creator. However, usability should be improved - quite annoying when you don't want to use it.
R2 Copilot
With data breaches and privacy concerns on the rise, finding a trustworthy AI assistant has become a challenge. R2 Copilot has proven to be the best private GPT I've tried, offering the dual benefi...
R2 Copilot is a true miracle of technology! This tool has made my daily work much easier and helped me save a lot of time. The user interface is intuitive, allowing you to quickly get started witho...
Related Comparisons
Frequently Asked Questions
Which is better, Grammarly or R2 Copilot?
Based on FactScore™, Grammarly leads with a score of 82.7 vs 63.9. Grammarly has a higher rating of 4.7★ compared to 5.0★.
What are the pros of Grammarly compared to R2 Copilot?
Grammarly uniquely offers: Grammar and style checking, Writing style improvement, AI-powered assistance, Convenient interface, Spelling and punctuation correction.
What are the pros of R2 Copilot compared to Grammarly?
R2 Copilot uniquely offers: Fast performance, Privacy features, Security measures, User-friendly interface, Accurate responses.
Is Grammarly better rated than R2 Copilot?
Grammarly is rated 4.7★ from 56 reviews. R2 Copilot is rated 5.0★ from 18 reviews.
What is the FactScore™ of Grammarly and R2 Copilot?
FactScore™ weighs rating and review volume together. Grammarly scores 82.7 and R2 Copilot scores 63.9.
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