OpenProfit

OpenProfit is an open-source alternative to Baremetrics, ChartMogul and ProfitWell Metrics for developers whose margin depends on their bills. Subscription analytics tools read your payment processor. OpenProfit also reads the billing APIs of OpenAI, Anthropic, Vercel, Cloudflare, Railway and nine other providers, and shows profit for each product.

Features:

• Revenue from Stripe, Polar, Paddle, Lemon Squeezy and RevenueCat, net of fees and refunds
• Costs by day and by project from 14 provider APIs, plus flat costs you add by hand
• Profit, MRR and customers per product, with alerts when a bill spikes
• Public pages and badges for building in public
• A monthly journal for QuickBooks or Xero, and the year's totals on your tax form's lines
• A remote MCP server, so Claude or Cursor can read your numbers

Free under $2,500 MRR, then $19 or $49 a month. Self-hosting is free under the MIT license, as one Docker image.