6 hours -- I had the idea this morning and started at around 2PM (first commit on GitHub). Finished at around 8PM. The app is all client-side, so I didn't have

6 hours -- I had the idea this morning and started at around 2PM (first commit on GitHub). Finished at around 8PM. The app is all client-side, so I didn't have any backend need. The app renders using a UI rendering library I wrote (https://github.com/thesephist/torus https://github.com/thesephist/torus), so I knew the tools I was using inside out, which helped with speed.