This page is the whole of it. It is short because it is meant to be read.
There is nothing to sign up for here, so there is nothing to store.
No analytics, no advertising pixels, no fingerprinting scripts. The page loads no JavaScript at all.
Nothing you could type here is sent anywhere, because there is nowhere to type.
Like any web server, the host records requests — an IP address, a time, and the file asked for. That is the network doing its job, not us profiling you.
The application is a separate thing from this page, and its promises are narrower: it installs software on your machine, it records what it created so you can remove it cleanly, and it sends nothing about your files anywhere. Your sign-ins happen in your own browser, and your API keys stay in your operating system's credential store.