Tools
Four tools, all free and account-free. None of them forecast profit; their job is to compute the things that can be computed.
Position calculator
Size a position from the risk you accept rather than the leverage you fancy. Also gives required margin, an approximate liquidation price and risk/reward.
Simulator on real trades
Replays our real recorded trades over a hypothetical stake, in order, including every losing trade.
Trading journal
Record your trades and see your own win rate and average return. The data stays in this browser and is sent nowhere.
Economic calendar
The macro events that move the market: CPI, rates, employment. So you do not open a position into one unaware.
Per-symbol calculators
Symbols we have actually traded get their own page, which also shows that symbol's record.