No code required. Trade count and its confidence interval, what the profit factor implies, the cost that zeroes the edge, same-bar stop-and-target fills, circular bootstraps, repaint, and whether a forward record exists. One page, printable.
Confirm the email and the PDF opens straight away. One email a week after that — a worked check each Tuesday — and nothing else.
Two open-source TradingView scripts go with it, both free to add to your own chart and read line by line:
And four free calculators for the arithmetic: win-rate interval, trades needed, costs in R and turnover cost.
Most published backtests fail on arithmetic, not on strategy. A 60% win rate over 25 trades has a 95% confidence interval of roughly 41–77%; a profit factor of 2.0 at 35% wins requires the average winner to be 3.7× the average loser. Neither fact needs the source code, and both decide whether the screenshot means anything.
1 Trade count · 2 Implied payoff · 3 The cost that zeroes it · 4 Same-bar stop and target · 5 Circular bootstraps · 6 Repaint · 7 Text versus chart · 8 Window, venue, costs · 9 Selection · 10 Forward record.
Anyone evaluating a strategy — their own or a vendor's — on TradingView, TradeStation, or a spreadsheet. If you write Pine Script, check 6 is the one that bites.
The same checks I apply to my own systems before they get a forward test, and to other people's when they ask. The long version is Trading as a System (the book); the code discipline is the Indicator Template Pack.
Historical simulations are not live results. Nothing on this site is investment advice.