Signal · by Lurphy

Master investment banking.

A focused app that teaches IB from the ground up and preps you for interviews. Every question is written from first principles, no recycled prep-course filler.

Get early access

Launching soon, coming to the App Store.

What's inside

Built to actually get you ready.

First-principles concepts

The "why" behind accounting, valuation, and deals, explained simply.

Real interview prep

A growing bank of the questions that actually get asked.

Track your progress

Know what you've mastered and what to study next.