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Grammar and academic-style checker built for research writing, with plagiarism and AI-text detection
Trinka checks academic and technical writing rather than general prose. Alongside grammar it flags academic tone, subject-specific usage and the conventions journals expect, and bundles plagiarism checking, AI-content detection, paraphrasing and citation help. It runs as a web editor, a Microsoft Word add-in for Windows and Mac, browser extensions for Chrome, Firefox and Edge, a Windows desktop app with an offline checker, and an enterprise API. It is made by Enago (Crimson AI) in India. The free tier caps writing assistance at 5,000 words a month; a $300-a-year Confidential Data plan promises real-time deletion and no training on your text.
Free Basic tier: 5,000 words/month of writing assistance and 5 AI writing requests. Premium and Premium Plus prices are not printed as figures on the pricing page, which lists only features and quotas; the one fixed number shown is $300/year for the Confidential Data plan. Team and institutional pricing is by quote.
Use tool ↗For a thesis or a journal submission this beats a general grammar checker, because it corrects toward academic register and subject conventions rather than plain readability. The privacy posture is unusually concrete: a paid tier that deletes text in real time and states no training on your content, with SOC 2, HIPAA, ISO 27001 and GDPR claims behind it. The pricing page is the weak point, listing quotas but not prices for the individual tiers.
Watch out: The no-storage, no-training promise is attached to the Confidential Data plan, not to the free or standard Premium tiers.
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