Buy Airtight — Private Portfolio Tracker

Your portfolio data never leaves your browser.

Investing Privacy Cryptocurrency发布于 2026年6月27日

什么是 Buy Airtight — Private Portfolio Tracker？

A single HTML file that tracks your entire portfolio — crypto, stocks, ETFs — from CSV exports. No account. No cloud. No API keys. FIFO cost basis, live prices, holdings dashboard. Your financial data never leaves your machine. $29 once, not a subscription.

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