This is a mobile-focused web app used so far by hundreds of volunteers who deliver food to people in Cambridge 3 times a week.

It's built with Next.js/React, Chakra UI, React Query and it's connected up to a Google spreadsheet that runs lots of scripts in the background (not written by me). The challenge here was handling the slowness of the Google Sheets API and making sure the app stays responsive throughout.

Check out the repo