Why one click instead of a signup
Almost every backtesting tool puts a registration form between you and the chart, on the theory that an email address is worth more than a first impression. It isn't. If the replay is good, you will know within about ninety seconds of using it; if it isn't, an email address you were pressured into handing over is worth nothing to either of us.
So the chart is the front door. Click any link on this page and you are in a live session on real market history, stepping candle by candle and placing trades, with your work saved from the first candle. An account exists for syncing that work across devices, which is a reason to make one after you have decided the tool is any good.
What "candle by candle" actually protects you from
Scrolling a chart backwards is not backtesting. When the whole day is on screen you already know where price went, and no amount of discipline un-knows it: you will find the setups that worked and skip past the ones that didn't without ever noticing you did. Replay removes the option. You see one candle, then the next, in the order they happened, and every indicator and every detected concept is computed from revealed candles only.
That constraint is what makes the resulting numbers mean something. See the backtesting mistakes that inflate results, and how many backtests it takes before a win rate is distinguishable from luck.
The free sample is the whole tool
The sample is not a crippled demo. Every market, every timeframe, every drawing tool, every built-in indicator and every ICT concept overlay is in it. What it limits is how much you replay: 10,000 candles, once. Unlimited replay is $14.99 a month, which is what you need once you are testing across years rather than learning the tool.
Where to start
If you already have a method, open the market you trade and start logging. If you don't, start with a rule simple enough to have no wiggle room, like the opening range or a Donchian breakout, and run a hundred of them. The point of the first backtest is not to find an edge. It is to find out how a mechanically perfect rule feels during a losing streak, because that is the thing that decides whether you can follow any rule at all.
Then size what you found: the position size calculator turns a stop distance into a position, and the risk of ruin calculator tells you what your measured win rate actually survives.
And know what the bare setup scores before you credit your rules with an edge. We measured the textbook versions on four years of our own data: CRT, fair value gaps, order blocks and the previous day's high and low. Each one comes out at zero or below on its own, which is the baseline your version has to beat.