Trinka is listed under Copywriting & Writing, in the Content & Media Generation category on Flocci AI Tools. Grammar/style checker tuned specifically for scientific and technical writing. It is freemium — a usable free tier with paid plans above it, and it lives at trinka.ai.
Trinka is freemium: there is a free tier you can work in and paid plans above it. It is one of 426 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.
Trinka works in a normal browser tab with no install. It is available on the web, Windows, Mac and a Chrome extension.
Trinka does 3 things the catalog singles out: Grammar/style checker tuned specifically for scientific and technical writing; bundled ai content detector plus plagiarism checker on premium plus; 30+ language translation on higher tiers for academic authors.
Google TextFX is the closest free alternative: it sits in the same Copywriting & Writing sub-category and is free. Grammarly, Jenni AI and LanguageTool also start free. The full list is on the alternatives page.
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