Not if you're from outside the EU/EEA and don't qualify for scholarships or other waivers. I just checked TU Munich as an example and they charge 6000 euros/semester for non EU/EEA CS Masters students.
Some feedback: I was about to try now (paying) but currently I can only install it in my desktop (no iOS support), and I am very worried about the idea of giving full access to a close-source unpopular extension with not-very-clear ownership.
I think it would go a long way to create some trust to show who are you in the webpage and maybe open source the extension too (the backend is not as importa nt).
I'm considering open sourcing the extension. I don't want people to be able to copy it wholesale, but realistically that's unlikely and I'm going to write some blog posts on the technical details anyway.
Please do! i would love to contribute, ive been looking for something like this for some time but didnt want to install toucan since its closed-source and i dont trust it
I actually released my extension around the same time that the Quarto extension came out. Quarto is great for documents running R code or needing some of Quarto's advanced document features. My extension has scroll sync and the preview updates live while you type. If you need code execution, you can use multiple Jupyter kernels per document and execute inline code. Also, code execution is non-blocking, so the preview still updates when you type, and code output appears live as it becomes available.
When I took it, it was still $250. The course was free and you paid to take a cert test at a testing center. The following year they made the whole thing online and free.