The arithmetic you do before a trade, done properly. Everything here runs in your browser: no account, no install, and nothing you type leaves your machine.

Why they are free

Because they cost nothing to run and they are the part of the job that should never have been a product. A position size is a division; charging for it, or trading it for an email address, would say something about the rest of the site that is not true.

What is sold here is the work these tools cannot do: the indicators that put the level on the chart before the trade, and the testing behind them.

Missing one you use every day? Say so — the list is short because it is new, not because it is finished.