Leonardo Harmonic Pattern Indicator Download for MetaTrader 4 | Forex Indicator Download - MT4/MT5 Resources

On July 1, 2025, in version 2, the indicator added alerts/notifications and signals functionality

The Leonardo Harmonic Pattern Indicator is considered one of the most accurate price reversal analysis tools. Fibonacci ratios in Technical analysis .

This MetaTrader 4 classic chart pattern indicator is very similar to the Bat Pattern but its Fibonacci levels show fundamental differences.

By accurately identifying waves XA to CD , potential entry or exit zones can be accurately determined. Key ratios such as 50% , 88.6% , and 261.8% are crucial to forming this structure.

Leonardo Harmonic Mode Indicator Spec Sheet

The main features of Leonardo harmonic mode indicators are shown in the following table:

Indicator Overview

Fibonacci ratios Most harmonic indicators are very similar with only subtle differences; however, the ratios used in the Leonardo harmonic indicator are defined as follows:

• XA: This movement can represent any price movement on the chart. It does not need to meet specific conditions to become part of the harmonic structure
• AB: Move in the opposite direction of XA, usually wrapping around 50% of the XA leg
• BC: The wave is in the opposite direction to AB and must be 38.2% or 88.6% of AB
• CD: The last step, the opposite of BC
• AD: The total distance from point A to point D should be equal to 78.6% XA Verify harmonic structure

Importantly, the ratio in the CD wave harmonic mode is based on wave BC . In Leonardo harmonic mode they are defined as follows:

• If wave BC = 38.2% of AB → CD should extend to 112.8% of BC
• If wave BC = 88.6% of AB → CD should reach 261.8% of BC

Uptrend Conditions

On the GBP/JPY chart, once the Leonardo pattern structure is completed, the indicator accurately plots the XA , AB , BC , and CD waves, identifying point D as a reversal zone .

At this level, the likelihood of a trend reversal from bearish to bullish increases based on the defined Fibonacci ratios.

downtrend conditions

The chart below shows the CAD/CHF currency pair in a downward trend . After completing the harmonic structure, the indicator highlights point D as a sensitive area for potential reversals.

Here, Fibonacci ratios AB , BC , and CD are analyzed, and as the price approaches point D, bearish reversal rises.

Indicator Settings

The settings for the Leonardo Harmonic Mode indicator are shown below:

• Minimum Wave Length (Candles): Minimum number of candles to detect a wave
• Number of previous candles: the number of previous candles used in the calculation
• Show Lines: Turn on/off pattern lines
• BreakPivot: Enable pivot break detection
• Original Pivot to Broken Pivot (Pipette): The distance between the original pivot and the broken pivot (in the pipette)
• Shift: The amount of movement of visual positioning on the chart
• BullishPattern: Enable bullish pattern detection
• BearishPattern: Enable bearish pattern detection
• Style Of Line: Select line style
• Width Of Line: Set line thickness
• Custom Color Lines (Bearish Harmonic): The color of the bearish pattern lines
• Custom Color Line (Bullish Harmonic): Color of the bull pattern lines
• Custom text color: Set the text color

Conclusion

The Leonardo Harmonic Pattern Indicator utilizes Fibonacci ratios to detect potential price reversal points in financial markets. Although structurally similar to the bat pattern, its Fibonacci levels are significantly different.

This MT4 Harmonic Pattern Indicator consists of five bullet points. It analyzes price movements through XA, AB, BC, CD, and AD waves.