Question 1

Which India stock screener has free chart pattern detection?

Accepted Answer

HeRAI is a free NSE India chart pattern screener that detects: head and shoulders, inverse head and shoulders, double top, double bottom, triple top, triple bottom, ascending triangle, descending triangle, symmetrical triangle, bull flag, bear flag, rising wedge, falling wedge, cup and handle, rectangle breakout, up channel, down channel, hammer, bullish engulfing, bearish engulfing, doji, morning star and evening star. All signals are scored 0“100 and updated after every trading session. No login required.

Question 2

What chart patterns does HeRAI scan for?

Accepted Answer

HeRAI scans for: (1) Classical chart patterns — head and shoulders (top), inverse head and shoulders, double top, double bottom, triple top, triple bottom, ascending triangle, descending triangle, symmetrical triangle, bull flag, bear flag, rising wedge, falling wedge, rectangle breakout/breakdown, cup and handle, up channel, down channel. (2) Candlestick patterns — hammer, shooting star, bullish engulfing, bearish engulfing, doji, morning star, evening star, piercing line. Every pattern is scored 0“100 on volume, trend alignment, ATR sanity, weekly trend and ADX strength.

Question 3

How are chart pattern signals scored and filtered?

Accepted Answer

Each pattern is scored 0“100 based on: (1) Volume on trigger bar vs 20-day average (≥1.5x boosts score), (2) Trend alignment — price vs 50-EMA and 200-EMA, (3) ATR sanity — body/range vs 14-day ATR, (4) Weekly trend via 10-EMA of weekly closes, (5) ADX(14) > 25 trending bonus. Only signals scoring >= 55 are shown. Breakout patterns require trigger-bar volume >= 1.1x the 20-day average — price movement without volume is discarded.

Question 4

How often is the chart pattern screener updated?

Accepted Answer

The pattern scanner is fully recomputed after every trading session using end-of-day price data for all 2189 India stocks. Results always reflect the latest market close.

Question 5

What is the difference between the chart pattern screener and the swing screener?

Accepted Answer

The chart pattern screener identifies which classical or candlestick pattern has just triggered on a stock's daily chart. The swing screener goes further: it requires an actual bounce off a specific support level (EMA, Fibonacci retracement, or swing pivot) in the last 1–7 days, with a calculated entry, stop-loss, target and minimum risk-reward ratio of 2. Use the pattern screener to identify setups; use the swing screener for trade-ready candidates with defined risk parameters.

NSE Chart Pattern Screener

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