I will build an offline first pwa for field data collection

Need an app your field team can use with no internet?

I build offline-first Progressive Web Apps (PWAs) that keep collecting data when the connection drops, then sync safely to a central database when it returns.

I built this for real: a disease surveillance system used for field data collection, where unreliable connectivity was the main constraint. The same approach works for surveys, inspections, health outreach, agriculture and logistics.

WHAT YOU GET

- Installable PWA that works fully offline (IndexedDB via Dexie)

- Clean, responsive UI (React, Vite, Tailwind, shadcn/ui)

- Backend API and PostgreSQL database (Express) with login and sync [Standard and Premium]

- Roles, dashboard and CSV export [Premium only]

- Full source code

WHY ME

- Offline sync built and tested in a real deployment

- Secure by default: input validation, authentication and protected endpoints

- Clear communication and on-time delivery

WHAT'S NOT INCLUDED

Native iOS/Android apps, payment integration and real-time collaboration. Ask me about these as custom add-ons.

Before ordering, message me with your form fields and number of users. I'll confirm the right package in minutes.