Bars cut the way your broker cuts them
MT5 anchors bars to midnight on the server clock, so a GMT+2 broker and a GMT+3 broker disagree about every 4-hour candle. Higher timeframes here are rebuilt from your own export, on the clock you choose, so H4 and D1 match the terminal you actually trade.
Your data never leaves the machine
Price history and anything you write are read and stored in your browser. There is no upload, no account needed to chart, and no server that ever sees a position of yours. Open DevTools and watch the network tab — that is the whole proof.
A backtest that admits what it cannot know
When one bar touches both your stop and your target, OHLC cannot say which came first. Every such bar is counted as a loss and the total is reported, because the assumption decides the result.
Works with whoever you trade with
Export from MT4, MT5, TradingView or Dukascopy and drop the file in. The format is worked out from the file itself — delimiter, header, columns, date layout — and the gaps, duplicates and bad bars it finds are shown before anything is saved.
Write your own indicators and strategies
A small JavaScript API with the technical-analysis primitives already provided. Your code runs in a sandboxed worker with no network and no page access, gets the same settings panel the built-ins get, and is stored on your device.
Seventeen drawing tools
Rays, boxes, channels, Fibonacci with editable levels, range projections, and long/short position tools that size a trade from lot, leverage, spread, commission and swap — in your account currency.