What is CostPad?

CostPad is a pricing simulator for micro-SaaS founders. It turns your real costs and pricing into the one number that actually matters: your blended margin — what you keep per paid user once COGS, payment fees, and free-tier drag are all accounted for.

Who it's for

Founders and operators deciding what to charge, how to structure tiers, and whether the unit economics hold up as they grow — without rebuilding a spreadsheet every time an assumption changes.

What makes it different

• Blended, not best-case. Most pricing math reports your best tier. CostPad blends every tier against your real user mix, so the margin is the one you'll actually see.
• COGS that scale honestly. Fixed, per-user, and per-unit costs are modeled separately, so your per-user math stays honest as you scale.
• Local-first. Your model lives on your machine — no account required to start, no telemetry.
• AI-native. The same engine runs as a local MCP server, so assistants like Claude can read your model, audit COGS, and run pricing scenarios in their own flow.

Where it runs

• Desktop & web app — the full visual simulator with draggable dashboards and panels.
• MCP server — a headless engine for AI assistants (npx @costpad/mcp).

Next: the installation guide, or how it works.