RatioFang Harmonic Pattern PRZ Indicator

RatioFang detects harmonic patterns on your chart and draws the PRZ (Potential Reversal Zone) together with entry, stop-loss and take-profit guides. It is a display-only indicator: it never places, modifies or closes orders.

What it detects

Gartley, Bat, Alt Bat, Butterfly, Crab, Deep Crab, ABCD, Cypher, Shark, 5-0 and Three Drives, both bullish and bearish. Every pattern is checked against its commonly published Fibonacci ratios, with an adjustable tolerance.

What you see on the chart

• The X-A-B-C-D legs with the ratio of each leg
• The PRZ band, its center line and an invalidation line
• Entry, stop-loss and three take-profit guide lines with the risk/reward of each target
• The pattern name (Bullish / Bearish) in the top-right corner
• A compact info panel in the top-left corner: pattern, ratio accuracy, PRZ range, current price and distance to the PRZ, risk in pips, and a lot size guide

Ratio accuracy

The panel shows how far the ratios are from the ideal values (Ideal / Good / Fair / Edge of tolerance), so you can judge the quality of each pattern at a glance.

Lot size guide

Enter a fixed capital amount or use the account balance, set your risk per trade in percent, and the panel shows a lot size guide for the stop-loss distance. If the result is below the symbol's minimum lot, the panel says so.

Oscillator check

The panel also shows a MIDDLE and a LONG oscillator check (position at point D, current direction, regular or hidden divergence) as additional context.

Alerts

Optional popup, push notification and email alerts when price enters the PRZ.

Input parameters (all in English)

• Detection: swing depth, minimum swing and pattern size, ratio tolerance, PRZ tolerance, bars to analyze, closed bars only
• Patterns: turn each of the 11 patterns on or off
• Display range: show only recent patterns, number of patterns shown, bullish / bearish filter
• Design: colors, line width, fill strength, font sizes, panel options
• Entry helper: entry basis (price at D, PRZ center or current price), take-profit ratios, minimum stop distance, lot size guide
• Oscillator check, Diagnostics and Alerts

Notes

• Works on any symbol and any timeframe. Patterns are detected from past price data, so the display can change as new bars form.
• Harmonic patterns do not guarantee any result. The entry, stop-loss and take-profit lines are guides based on the pattern geometry, not trading advice or a promise of profit. Test on a demo account first.
• The indicator does not use DLLs or external files.