Koldflux is two things
A subscription studio, and a free tools suite. Here is what each one actually does.
The studio
Koldflux turns your own recordings, voice notes and half-finished ideas into short-video and carousel exports, in your voice and your style. It is built for creators who want less time in an editor and more time actually publishing - you bring the raw material, Koldflux handles cutting, captioning and formatting for the platforms you post to.
The free tools
Alongside the studio, Koldflux runs a large suite of free, browser-based creator tools: video and image converters, calculators, platform specs, subtitle utilities, and a licensed library of vector icons and fonts. They need no account and no upload - files are processed on your own device. See how and why the free tools work this way.
Who it is for
Short-form creators repurposing one recording across several platforms; anyone who needs a quick, accurate answer to a creator-adjacent question (what size is a YouTube thumbnail, how long can a TikTok caption be, what does 1080×1920 look like); and people who would rather not upload a file to a random site just to crop or compress it.
How the two relate
The free tools are not a trial or a teaser - they stay free and useable on their own. Some of the people who find them useful eventually want the fuller studio workflow, and that is the entire business model behind giving the tools away: no ads, no data resale, no watermarks. Both run on the same underlying engineering, so a calculation or export you see in a free tool behaves the same way inside the studio.