MarketPlain

US stocks + crypto / made clearer

A clearer view.
A better question.

Understand the arithmetic behind the markets with focused tools, factual recaps, and plain-English explanations.

Explore the tool library →

The library

Three ways to get your bearings

01 / CALCULATE

Financial tools

Explore crypto profit and loss and recurring-purchase scenarios with transparent browser-based calculators.

02 / CATCH UP

Daily market recap

A home for sourced market snapshots. Recaps will appear once the public-data pipeline is ready.

03 / UNDERSTAND

Plain-English guides

Question-led explanations of market mechanics. Our first guides are being prepared.

MarketPlain is taking shape. This initial release establishes the library; it does not yet contain calculators or live market data.