Best Harmonic Pattern Indicators on TradingView (Free and Paid)

Harmonic patterns use Fibonacci ratios to identify potential price reversals before they happen. The patterns are precise, but spotting them manually on a live chart is tedious and error-prone. A harmonic scanner on TradingView automates that detection so you can focus on confirmation and entry.

Key Takeaways

• TradingView has both free and paid harmonic pattern scanners, ranging from single-pattern detectors to multi-pattern dashboards.
• The PatternsHunters Harmonic Scanner (free) and Harmonic Scanner Pro (paid) are among the most widely used, detecting Gartley, Bat, Butterfly, and Crab.
• Tracking which patterns produce results in your specific trading style requires a journal, not just a scanner.

What Are Harmonic Patterns?

Harmonic patterns are geometric price structures built on specific Fibonacci ratios. Each pattern consists of swing legs labeled X, A, B, C, and D, and a pattern is only valid when the retracement and extension ratios between each leg meet precise mathematical rules.

For example, the Gartley pattern requires the AB leg to retrace 61.8% of the XA leg, while the CD leg must extend to a Fibonacci level that creates the potential reversal zone (PRZ). The Bat pattern requires a deeper BC retracement and an 88.6% retracement of XA at point D. The Butterfly pattern extends beyond the origin point, with the D leg reaching a 127.2% or 161.8% extension of XA. Each pattern has its own ratio tolerances, and violating those rules invalidates the setup entirely.

The core pattern families include the Gartley, Bat, Butterfly, Crab, Cypher, and Shark. Some traders also use the 5-0 pattern, which identifies exhaustion moves after a five-point completion. Harmonic patterns are part of a broader family of chart patterns used in technical analysis, and they share the common principle of using price structure to anticipate behavior rather than reacting to it after the fact.

Because the ratio rules are strict, harmonic patterns are considered high-probability setups when they form correctly. That precision is also why manual identification is difficult on a live chart: a single ratio being off by a small margin changes which pattern is forming, or invalidates the setup entirely. This is the core problem a harmonic scanner solves.

How Harmonic Scanners Work on TradingView

A harmonic scanner monitors price swings on a chart and compares the ratio between each leg against the Fibonacci rules for each pattern family. When an unfolding XABCD structure meets the ratio thresholds for a known pattern, the scanner draws it on the chart and can fire an alert.

The underlying mechanics depend on the indicator. Simpler scanners identify five swing points using zigzag logic and check the ratio at each labeled leg. The zigzag depth setting determines how sensitive the scanner is to minor price swings: a shallow depth identifies more patterns but includes more noise; a deeper setting is more selective. More advanced scanners apply multi-timeframe logic, monitoring multiple instruments simultaneously and displaying results in a dashboard rather than drawing on a single chart.

All harmonic indicators on TradingView are written in Pine Script and run inside the TradingView charting environment. Free scripts are available in the public library, accessible from the Indicators button on any chart. Paid scripts require a subscription through the script author’s TradingView page before they will apply to your chart.

Best Free Harmonic Pattern Indicators on TradingView

These are the most widely used free harmonic pattern indicators in the TradingView public library. Each covers a slightly different pattern set and display approach.

Harmonic Scanner by PatternsHunters

The PatternsHunters Harmonic Scanner is one of the most used free harmonic indicators on TradingView. It detects four core patterns: Gartley, Bat, Butterfly, and Crab. The indicator identifies XABCD swing points automatically and highlights the potential reversal zone when a pattern completes.

The display is clean: the indicator draws the five-point structure with Fibonacci levels labeled at each leg. Configuration options include adjusting the zigzag depth used to identify swing points and toggling which patterns to detect. It is a solid starting point for traders learning harmonic analysis who want the core four patterns covered without a subscription.

Harmonic Scanner by PatternsHunters on TradingView

Harmonic Patterns by RunRox

RunRox offers a free harmonic indicator that covers the same core pattern set with a zone-highlight display. Instead of just drawing the XABCD legs, the indicator overlays a shaded zone on the potential reversal area, giving visual traders a clearer sense of where the pattern is expected to complete.

The indicator also includes pattern labels and Fibonacci level markers, and it can fire alerts when a pattern reaches its PRZ. Best for traders who prefer to see the target zone marked on the chart rather than working from labeled legs alone.

Harmonic Patterns by RunRox on TradingView

Classic Harmonic Scanner by abo0o

A focused free indicator detecting Gartley, Bat, and Butterfly. Lighter and cleaner than multi-pattern scanners, with minimal chart noise. Best for traders who work only the three most foundational patterns and prefer a simpler chart environment without the additional overlays that come with more feature-heavy indicators.

No subscription required. Accessible directly from the TradingView indicator search by typing the indicator name.

Best Paid Harmonic Pattern Scanners on TradingView

Paid scanners add alert infrastructure, multi-timeframe support, and additional pattern types beyond the core four. These two are the most actively maintained paid options available on TradingView.

Harmonic Scanner Pro by PatternsHunters

The paid upgrade from the free Harmonic Scanner. Harmonic Scanner Pro adds real-time alerts, historical pattern display, and expanded configuration options for Fibonacci tolerance. The core pattern detection covers the same Gartley, Bat, Butterfly, and Crab patterns, but the alert system allows you to be notified when a pattern completes without watching the chart continuously.

The additional configuration depth is useful for traders who have specific ratio tolerances they prefer. Tighter rules reduce false positives at the cost of missing some setups; wider tolerances catch more patterns but require more discretion at the confirmation stage.

Best for active traders who use harmonic setups regularly and need built-in alert capabilities to manage multiple positions without constant chart monitoring.

Auto Harmonic Screener UltimateX by Trendoscope

A multi-symbol scanner that monitors up to 20 instruments simultaneously for harmonic patterns across timeframes. Instead of drawing patterns on a single chart, it displays results in a dashboard panel showing which instruments have active setups, the pattern type, and the timeframe where the pattern is forming.

Best for traders who scan multiple markets and want harmonic signals consolidated in one view without switching charts manually. Particularly useful for equities, forex, and futures traders who run broader watchlists and need an efficient way to triage which setups deserve attention.

Auto Harmonic Screener UltimateX by Trendoscope on TradingView

How to Choose the Right Harmonic Scanner

The right indicator depends on how you actually trade harmonic patterns, not on which one has the most features.

Budget: Free options cover the core Gartley, Bat, Butterfly, and Crab patterns, which represent the majority of setups most harmonic traders take. Paid options add alert infrastructure and multi-timeframe scanning. If you are learning harmonic analysis, start with a free scanner before committing to a paid subscription.

Pattern scope: If you trade Cypher and Shark in addition to the core four, you will need a more comprehensive scanner. Most free indicators on TradingView do not cover Cypher and Shark. Check the script description on TradingView before adding any indicator to confirm which patterns it detects and at what ratio tolerances.

Display style: Visual traders who want the potential reversal zone highlighted on the chart tend to prefer the RunRox indicator. Traders who want minimal chart decoration and just the labeled XABCD legs tend to prefer the PatternsHunters scanners. Alert-driven traders who do not monitor charts continuously will want the Pro version or the Trendoscope screener.

Asset class: Most harmonic scanners work across any TradingView-supported market, including equities, forex, crypto, and futures. Pattern behavior differs more by timeframe than by asset class. On shorter timeframes (under 15 minutes), harmonic patterns produce more false positives because the noise-to-signal ratio increases significantly. The 4-hour and daily timeframes are where most experienced harmonic traders focus.

For a broader look at technical indicators available on the platform, see the guide to the best TradingView indicators.

How to Add a Harmonic Scanner on TradingView

Adding any harmonic scanner from the TradingView library takes less than two minutes:

1. Open TradingView and navigate to a chart for the instrument you want to scan.
2. Click the Indicators button in the top toolbar.
3. Type the indicator name in the search bar, such as “Harmonic Scanner” or “RunRox Harmonic”.
4. Select the indicator from the results and click it to apply it to your chart.
5. Open the Settings panel (the gear icon on the indicator label) to configure inputs: pattern type filters, Fibonacci tolerance, and alert conditions.
6. Save your chart layout to preserve the configuration for future sessions.

For paid scripts, you will need to subscribe through the script author’s TradingView page before the indicator applies to your chart. Free scripts apply immediately to any TradingView account, including the free plan.

Frequently Asked Questions

What is a harmonic scanner?

A harmonic scanner is a technical indicator that automatically identifies harmonic price patterns on a chart. Instead of drawing XABCD legs manually, the scanner monitors real-time price swings and flags when Fibonacci ratio rules for a specific pattern are met, such as the 0.618 retracement rule for the Gartley or the 0.886 retracement at point D for the Bat. When the ratios align within the indicator’s tolerance settings, it draws the pattern structure on the chart and, in versions with alert support, fires a notification so you can act without watching the chart continuously.

Are harmonic pattern indicators free on TradingView?

Yes. TradingView’s public Pine Script library includes several free harmonic scanners, including the PatternsHunters Harmonic Scanner, the RunRox Harmonic Patterns indicator, and the Classic Harmonic Scanner by abo0o. Free versions typically cover Gartley, Bat, and Butterfly patterns. Paid upgrades add alert features, multi-timeframe support, and additional pattern types including Cypher and Shark.

What patterns does the PatternsHunters Harmonic Scanner detect?

The free Harmonic Scanner by PatternsHunters detects Gartley, Bat, Butterfly, and Crab patterns. Harmonic Scanner Pro covers the same four core patterns but adds real-time alert support and expanded Fibonacci tolerance configuration, making it more practical for active traders who manage multiple positions simultaneously.

How accurate are harmonic pattern indicators on TradingView?

Accuracy depends on market conditions, timeframe, and how strictly you apply confirmation rules. Harmonic patterns are best treated as high-probability reversal setups, not guaranteed signals. Most experienced harmonic traders require a second confirmation signal (a volume spike, candlestick reversal, or momentum divergence) before entering a position. The only reliable way to know which setups work in your specific trading style is to track your actual results per pattern type in a trading journal.