I built a privacy-first PWA for tracking your emergency supplies (PrepTrack) - Works offline, barcode scanner, expiration alerts

Hey everyone!

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I've been working on a project that solves a problem many of us face: keeping track of emergency supplies, food storage, and knowing what's expiring before it's too late.

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The Problem

Most people store supplies and forget about them. When disaster strikes (or you just need something), you realize half your stuff expired months ago. Existing solutions either:

- Cost money 💸

- Store your data in the cloud (privacy concerns) 🔒

- Don't work offline 📵

- Are clunky mobile apps

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### What I Built: PrepTrack

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A Progressive Web App (PWA) that works completely offline and keeps all your data on YOUR device.

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Key Features:

- 📱 Barcode Scanner - Scan items directly with your camera

- 🔔 Smart Alerts - Get notified X days before expiration

- 🌐 Works 100% Offline - No internet required after installation

- 🔒 Privacy First - All data stored locally via IndexedDB

- 📊 Dashboard - Visual overview of your supplies

- 💾 Backup/Export - JSON + CSV export for your data

- 🌍 6 Languages - DE, EN, PT, AR, IT, FR

- 🌙 Dark Mode - Because we all love dark mode

- 📦 LAN Sync - Optional sync between devices on same network

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Tech Stack (for the devs)

- React 18 + TypeScript

- Vite 6 (blazing fast build)

- Tailwind CSS 3

- Zustand (state management)

- Dexie.js (IndexedDB wrapper)

- Workbox (service worker + caching)

- Tesseract.js (OCR for expiration dates)

- @zxing/browser (barcode scanning)

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PWA Features:

- Installable on mobile & desktop

- Offline-first architecture

- Background sync ready

- Push notifications (local)

- Scored 92/100 on PWA audit

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Why I'm Sharing This

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I built this because I needed it myself. Now it's open source and free for anyone who wants it.

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Live Demo: https://beko2210.github.io/Prepper\_Log/

GitHub: https://github.com/BEKO2210/Prepper\_Log

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What I'm Looking For

- Feedback on the UI/UX

- Feature suggestions

- Bug reports

- Translations (currently 6 languages, more welcome!)

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TL;DR

Built a free, open-source PWA for tracking emergency supplies. Works offline, scans barcodes, alerts before expiration. All data stays on your device.

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Questions? Comments? Roast my code? Let me know!