Wise Expense Analytics

A beautiful, privacy-first web app that turns your Wise transaction history CSV into actionable financial insights, entirely in your browser, with zero data sent to any server.

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Features

Feature	Description
Drag & Drop Upload	Drop or browse your Wise CSV export
CSV Validation	Human-readable errors with line & column references
Multi-Currency	Automatic currency detection with per-currency analytics
Monthly Overview	Bar chart, total spending & income per month
Daily Trend	Line chart, day-by-day spending, filterable by month
Category Breakdown	Doughnut chart, spending distribution across all Wise categories
Daily Average / Month	Average spending per active day in each month
Day-of-Week Pattern	Bar chart, which weekday you spend most
Min / Max Days	Best and worst spending days for every month
Top Merchants	Your 15 highest-spending destinations
Monthly Summary Table	Totals, net balance, active days, and daily averages
100% Private	All processing is done client-side; no data leaves your browser

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Screenshots

Upload your CSV and get an instant dashboard:

• Stats row, Total Spent, Total Received, Transactions, Daily Average, Active Days, Unique Merchants
• 5 interactive Chart.js charts with smooth animations
• 3 insight tables, Top Merchants, Min/Max Days, Monthly Summary

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Usage

1. Export from Wise

   • Go to your Wise account → select a balance → Statement
   • Choose your date range and download as CSV

2. Open the app

   • Simply open index.html in any modern browser (Chrome, Firefox, Edge, Safari)
   • No build step, no server, no dependencies to install

3. Upload your file

   • Drag & drop the downloaded .csv onto the upload zone, or click Choose File
   • The app validates the file structure and shows friendly errors if something is wrong

4. Explore your data

   • Switch between currencies using the tab selector
   • Filter charts by month
   • Toggle between Completed-only or All statuses

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CSV Format

The app expects the standard Wise Transaction History export with these columns:

ID, Status, Direction, Created on, Finished on,
Source fee amount, Source fee currency, Target fee amount, Target fee currency,
Source name, Source amount (after fees), Source currency,
Target name, Target amount (after fees), Target currency,
Exchange rate, Reference, Batch, Created by, Category, Note

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Tech Stack

Library	Version	Purpose
Chart.js	4.4.4	Interactive charts
PapaParse	5.4.1	Fast CSV parsing
Vanilla JS / CSS	-	No framework, no build tools

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Project Structure

wise-expense-analytics/
├── index.html          # App shell & HTML structure
├── dist/
│   ├── chart.umd.min.js
│   └── papaparse.min.js
├── src/
│   ├── style.css       # Full design system (dark theme)
│   ├── validator.js    # CSV structure validation with detailed errors
│   ├── analytics.js    # Data processing & aggregation engine
│   ├── charts.js       # Chart.js rendering for all 5 charts
│   └── main.js         # Application bootstrap & event handling
├── transaction-history.csv  # Sample Wise export (not committed in production)
└── LICENSE

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License

MIT License, Copyright © 2026 Seyyed Ali Mohammadiyeh (Max Base)