Signals and indicators
Repainting
Repainting is when an indicator changes, moves or removes a signal it has already shown, so its past chart looks better than it traded live.
An indicator repaints when a signal it has already displayed later changes. The arrow may shift to a different candle, flip direction or disappear altogether. On a historical chart everything looks near perfect, because only the signals that worked are left standing. In live trading you would have acted on arrows that are no longer there.
There are a few usual causes. The code may calculate on the still-forming candle, whose high, low and close keep changing until it closes. It may look ahead at future bars, as some zigzag and swing-point tools do. Or it may pull higher-timeframe data in a way that uses values that are not yet final.
This matters to anyone choosing signal software, because screenshots and recorded videos cannot reveal it. A repainting tool and an honest one look alike in hindsight, and the repainting one often looks better. The only reliable check is to watch the chart live, note each signal as it appears, and compare later.
The common mistake is confusing two different things. A signal that flickers while the candle is still forming is not necessarily repainting, if the rule is to act only after the close. Repainting proper is a change after the candle has closed. The other mistake is trusting a back-test of a repainting indicator; its results cannot be achieved live.
Worked example
Checking for repainting on a 5-minute Nifty chart
Illustrative numbers: at 10:35 am the 10:30 candle closes and a buy signal appears with entry 25,000 and stop-loss 24,960. Take a screenshot with the time visible. At 11:30 am, reload the chart and look at the 10:30 candle again. If the arrow is on the same candle with the same entry and stop-loss, even though the trade went on to lose 40 points, that signal held. If the arrow has moved to a later candle or gone, the tool repaints.
In WizeBuySell
You do not have to take our word on repainting. Each WizeBuySell indicator keeps its past signals on the chart, so you can compare what you saw live with what the chart shows later. During the 7-day trial at ₹199, screenshot each label as it appears, with the time visible, and check the same candles after a reload or the next morning.