README.md

Amazon Purchase History Analyzer (Frontend-Only)

A privacy-first, client-side web app to analyze your Amazon retail order history CSV. All processing is done in-browser; no data leaves your device.

Features

• Upload your Amazon retail order history CSV
• Filter by year range
• Interactive charts:
  • Total spend by year
  • Spend by month
  • Purchases by day of week (count, not value)
• Top 5 highest and lowest-value purchases
• Currency display matches the currency with the most purchases
• No data storage, export, or backend

How to Use Yourself Locally

1. Open index.html in your browser (double-click or use a local server)
2. Upload your Amazon CSV file
3. Explore your spending patterns interactively

How to use the Hosted Version (does not store data)

Click here to access the hosted version of the app.

Privacy

• No data leaves your browser
• No cookies, localStorage, or IndexedDB
• Data is held only in memory and cleared on refresh

Requirements

• Modern browser (Chrome, Firefox, Safari, Edge)
• Your Amazon retail order history CSV