Most personal finance writing is text. Ours is a workshop. Drag the dials, change the assumptions, and see the math redraw in real time.
Every chart on this site is reproducible. Click any number and we'll show our work.
Drag the rate and compounding frequency. Watch a $10,000 deposit balloon — or barely budge. See exactly why a small rate change reshapes a 30-year balance.
Open lesson →Enter your home price and down payment. See the monthly payment gap, the lifetime interest gap, and which loan actually fits your life.
Open lesson →Pick a purchase, set your APR, and watch a $3,000 charge balloon into $7,000+ if you only pay the minimum. Then see how to escape.
Open lesson →Stack up your card balances, tell us about your home, and watch a HELOC collapse years of minimum payments into a fixed schedule at half the rate.
Open lesson →A take-home pay slider that shows how 1%, 5%, or 15% saved every month quietly compounds into a fortune across a career.
Open lesson →Pick a target — $1M, $3M, $5M — and see exactly what it takes as a one-time deposit at birth, a monthly check, or a yearly birthday tradition.
Open lesson →Pick a school type, dial in the runway, and watch the gap between what you contribute and what's actually in the account on day one of freshman year.
Open lesson →