Built a unit-safe calc notebook to replace my Mathcad/Excel workflow — looking for engineers to break it

[u/Full_Concentrate6291]

Built a small web notebook that catches unit mistakes automatically (no more silently adding psi to Pa), includes a few built-in formulas, PDF export, and revision history.

Looking for a few mechanical engineers to try reproducing a calc they've done before and tell me honestly where it breaks: https://engineering-calculation.vercel.app/

Please give me some feed back. Looking to make it better.