fermi

What problem does it solve?

Provides a defensible, quick way to estimate unknown quantities when precise data is unavailable, converting "we don't know" into a decision-making number for market size, costs, effort, or resources.

Core Features & Use Cases

• Decompose to 3–5 factors: Break the unknown into a small factor tree that can be estimated independently.
• Round-number anchors: Use simple, justifiable round numbers to avoid false precision.
• Traceable reasoning and sense-checks: Show the full calculation, identify the most uncertain factor, and compare results to known references.
• Use Cases: Market sizing for product decisions, rough effort or cost estimates for project planning, early-stage user or capacity estimates to unblock strategy discussions.

Quick Start

Ask the assistant to "Ballpark the addressable market for indie developers in India using a 3-factor Fermi decomposition and show your factor tree, calculations, uncertainty range, and the most uncertain assumption."