Grammarly vs Roshi
Side-by-side comparison of features, pricing, ratings, and alternatives.
Grammarly is an AI writing assistant that checks grammar, spelling, punctuation, and style in real time across browsers, desktop apps, and mobile keyboards. It integrates directly into Gmail, Google Docs, Microsoft Word, Slack, and thousands of other websites via a browser extension. Beyond basic correctness, Grammarly analyzes tone and clarity, suggesting rewrites to make writing more concise, confident, or friendly depending on the context and audience selected by the user. GrammarlyGO adds generative AI features for drafting emails, replying to messages, and rewriting passages on demand, while Grammarly Business adds brand style guides and analytics for teams that need consistent written communication across an organization.
Roshi is an AI-powered lesson creation platform designed specifically for teachers and educators. It lets users turn simple text prompts into interactive learning materials such as fully voiced dialogues, visual documents, and targeted activities in a matter of seconds. The tool aims to dramatically reduce lesson prep time, claiming to save more than four hours of work per week by automating material creation and providing ready-to-share outputs.
Free for basic corrections; Premium starts at $12/month, Business at $15/user/month.
- Works across almost every app via browser extension
- Good tone and clarity suggestions beyond basic grammar
- GrammarlyGO speeds up drafting
- Free tier is genuinely useful
- Create interactive lessons quickly with simple prompt-based generation
- Includes fully voiced dialogues with custom voices and pronunciation
- Generates visuals, activities, and documents for diverse lesson needs
- Integrates directly with Moodle and Google Classroom
- Premium features behind a subscription
- Occasional over-aggressive suggestions
- Privacy concerns for some sensitive writing contexts
- No pricing, subscription, or free-tier details are listed on the website.
- AI-generated content may require teacher review and manual adjustments before classroom use.
- Requires an internet connection; no offline authoring option is mentioned.
- Limited publicly documented information about supported languages, advanced editing, or security/compliance features.
What reviewers say
Grammarly Reviews
3.0 (2)Good, not great
Grammarly is solid overall, though it's not perfect. On the plus side, good tone and clarity suggestions beyond basic grammar. That said, premium features behind a subscription, which held us back from rating it higher.
Good, not great
Mixed feelings about Grammarly after using it for a while. On the plus side, free tier is genuinely useful. That said, privacy concerns for some sensitive writing contexts, which held us back from rating it higher.
Roshi Reviews
No reviews yet.
More alternatives & similar tools
Alternatives to Grammarly
View all →
Alternatives to Roshi
View all →No alternatives listed yet. Browse similar tools →
The Verdict
AI-generated from listing dataRoshi is a niche AI lesson‑builder for teachers with Moodle/Google Classroom integration but no disclosed pricing, while Grammarly is a broadly‑used AI writing assistant with clear freemium pricing and extensive cross‑app support.
Key differences
- •Target audience: Roshi focuses on teachers creating lesson content; Grammarly serves writers, students, and professionals.
- •Pricing transparency: Grammarly offers a free tier and published subscription rates; Roshi provides no pricing information.
- •Core function: Roshi generates whole lesson materials (dialogues, visuals, activities); Grammarly checks and improves existing text.
- •Integration scope: Roshi integrates mainly with LMS platforms; Grammarly works across many apps via a browser extension and native apps.
- •Delivery model: Roshi is a web‑only SaaS with no offline authoring; Grammarly is available on web, desktop, mobile, and as an extension.
Pricing & value
Grammarly lists free and paid plans; Roshi has no disclosed pricing, making cost assessment impossible.
Ease of use / learning curve
Roshi uses simple prompt‑based clicks for lesson creation; Grammarly requires learning its UI and extensions but is still straightforward.
Features & depth
Grammarly provides grammar, tone, plagiarism, and generative AI across many document types; Roshi is limited to lesson generation.
Integrations & ecosystem
Grammarly integrates with Gmail, Docs, Word, Slack, plus browsers; Roshi only lists Moodle, Google Classroom, and unspecified platforms.
Collaboration
Grammarly offers brand style guides and team settings; Roshi has no collaboration features mentioned.
Scalability
Grammarly serves individuals to enterprises; Roshi is described for teachers without enterprise‑level details.
Support, Security & privacy
Grammarly lists help center, email support, and known privacy concerns; Roshi provides no support or security info.
Choose Grammarly if…
Writers, students, or teams needing real‑time writing assistance, clear pricing, and broad app integration.
Choose Roshi if…
Teachers needing rapid AI‑generated lesson plans with LMS push, and who can accept unknown cost.
Common questions
What is the cost to start using each tool?
Grammarly offers a free tier and Premium at $12/month; Roshi’s pricing is not disclosed.
Can I use the tool offline?
Grammarly has desktop apps for offline use; Roshi is web‑only with no offline authoring mentioned.
Which tool integrates with my LMS (e.g., Moodle)?
Roshi integrates directly with Moodle and Google Classroom; Grammarly does not integrate with LMS platforms.