run-liyi/wechatpay

This is a desktop application for analyzing your WeChat Pay transaction history. WeChat Pay is a widely used mobile payment system in China, and this tool lets you load your exported bill file and see charts and summaries of where your money went. The application is built with Electron, which means it runs as a native desktop app on Windows, macOS, and Linux even though the underlying code is JavaScript. It uses Chart.js for the charts and SheetJS for reading Excel files. Everything runs locally on your computer, the README is explicit that no data is sent to any server. To use it, you first need to export your billing data from the WeChat app on your phone. You navigate to the wallet section, choose to download your bill for personal bookkeeping (not the PDF version, which the tool cannot read), and WeChat emails you an encrypted zip file within 24 hours. After unpacking that, you have an Excel file you can load into this application. Once the file is loaded, the app shows several views: a summary of total income and expenses, breakdowns by merchant, by transaction type (such as transfers, red packets, or store purchases), and by payment method (such as your balance or a linked bank card). There is also a trend view that plots your spending over time by day, week, or month. You can search and filter individual transactions, and export the full analysis as a multi-sheet Excel report. Installation for developers involves cloning the project and running standard npm commands. Pre-built installers are not linked from the README, but build commands are provided for all three major platforms.