Every tool
Each one answers one question about your money, from real prices. No account: your portfolio stays in this browser and is sent only to be measured. Not advice.
Build your portfolio Type a name, change the amounts in place. See what you own, what each crisis did, what carries the risk. Risk check What carries the risk in your portfolio, holding by holding, and what each crisis did to it. Compare two funds How much of two funds is the same company, and how far each one fell. Before you add What adding one fund changes in what you already hold. Living off it A yearly withdrawal, replayed on every start month in the record. Every month The same amount bought every month, replayed on real prices. Employer stock Paid partly in your employer’s stock: how much of your money rides on one company. Famous portfolios Known mixes, measured again every trading day. In ChatGPT & Claude The same engine, inside your AI assistant. How it is measured Every figure, how it is worked out and where its prices come from.