Grammarly vs Letterly App
Side-by-side comparison · Updated April 2026
| Description | Grammarly is an AI-powered writing assistant designed to enhance writing by offering suggestions for grammar, style, tone, and clarity. Trusted globally by over 70,000 teams and 30 million individuals, it integrates seamlessly with platforms like Slack, Outlook, Notion, and Zendesk. Grammarly ensures data privacy and security, not selling or sharing user data. Organizations witness substantial ROI through productivity boosts, saving costs, and reducing editing hours. | Letterly is an innovative app designed in collaboration with linguists to streamline communication by making letter writing simpler and more efficient. Available on multiple platforms, you can easily download it from the App Store or Google Play. The app values user privacy, utilizing cookies to enhance the browsing experience, provide personalized ads, and analyze site traffic, with detailed options for consent and cookie management. Connect with Letterly through email, Facebook, Discord, and X (Twitter) to stay updated and engaged. |
| Category | AI Assistant | CommunicationApplication |
| Rating | No reviews | 5.0 (1) |
| Pricing | N/A | N/A |
| Starting Price | N/A | N/A |
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| Tags | AI writing assistantgrammar checkerstyle guidetone detectorclarity improvement | letter writingcommunicationstreamline communicationuser privacycookies |
| Features | ||
| AI-powered writing assistant | ||
| Grammar, style, tone, and clarity suggestions | ||
| Integration with Slack, Outlook, Notion, and Zendesk | ||
| Data privacy and security prioritization | ||
| Available on Windows, Mac, iOS, Android, and web browsers | ||
| Significant ROI for enterprises | ||
| Personalized writing suggestions | ||
| Support for style guide adherence | ||
| Trusted by over 70,000 teams and 30 million users | ||
| Testimonials from professionals highlighting productivity improvements | ||
| Co-created with linguists | ||
| Available on multiple platforms | ||
| Privacy and cookie management | ||
| Connect through various social media channels | ||
| Expert-designed templates | ||
| Detailed cookie customization options | ||
| Uses necessary, functional, analytics, performance, and advertisement cookies | ||
| Enhances browsing with specialized cookies | ||
| Free trial available | ||
| Simplifies letter writing process | ||
| View Grammarly | View Letterly App | |