I built a relativity calculator in the browser (iTensor) — now trying to fully launch it

Hey Devs 👋
I'm Klaudiusz, a technical physics graduate with a passion for science + software. I created iTensor, an interactive tensor calculator for general relativity. It's powered by Python, SymPy, and a custom backend, which I'm still working to host publicly.

👉 Compute Christoffel, Ricci, Einstein tensors from your own spacetime metrics
👉 Learn GR with full docs: https://itensor-docs.com
👉 If you like the project, you can support it here: ko-fi.com/itensor

Any help — feedback, support, or ideas — means a lot! I'm solo-building this in my free time, and I want to keep it open, useful, and accessible.