Trinka

Trinka is an AI-powered writing assistant and grammar checker for academics, researchers, students, and professionals who write academic and technical documents.

Key capabilities include:

• Academic and technical grammar editing with 3000+ rules focused on formal tone, clarity, coherence, inclusive language, and sentence flow
• AI-assisted writing and rewriting for generating text, expanding ideas, creating outlines and paragraphs, and refining drafts using prompts such as /Ask (AI Studio)
• Integrity and publication support including plagiarism checking, AI content detection, DocuMark (authorship verification), Technical Check Report, Reference/Citation Quality Report, and Journal Finder
• Real-time workflows and integrations via web app, browser extension (Chrome, Firefox, Edge), Microsoft Word add-in (Windows and Mac), plus Windows desktop and offline options; API/SDK and on-premise deployment are available for enterprises

Pricing: Freemium with a free Basic plan; paid plans include Premium ($20/month or $80/year), Premium Plus, Confidential Data (annual billing), and Enterprise/Institutions/Teams with custom pricing.

What makes it notable: Trinka focuses on academic and technical writing quality (not just general-purpose grammar), and offers privacy-focused options such as the Confidential Data plan with no data storage and no AI training, alongside enterprise integrations and integrity tooling for institutions.