Founder's Math

Founder's Math is a mental math trainer for everyday life and work. It teaches you to count in your head, starting with prices, bills, and tips, and going up to the numbers you see at work. Every technique is shown once with a real example, then you practice it until it becomes automatic. Heron, the coach inside the app, picks your level and pace on day one and writes the blog, where puzzles, paradoxes, and viral math arguments are explained with sources. The iOS app is coming soon; the waitlist is open at foundersmath.app.