Sine Direction Arrows is a non-repainting MT4 indicator designed to identify short-term directional bias using a smoothed sine-style cycle calculation, combined with an advanced trend filter. The core logic detrends price using a mid-price average, smooths it, and then evaluates whether the sine curve is rising or falling. When the direction changes, clear buy and sell arrows are plotted directly on the chart.

To improve signal quality, a powerful trend filter can be enabled. This filter is based on a fast/slow moving average relationship and can optionally include ADX for trend strength confirmation. Signals are only allowed in the direction of the prevailing trend, helping to avoid counter-trend entries and choppy market conditions. The indicator supports multi-timeframe (MTF) analysis for both the sine calculation and the trend filter.

A built-in information panel displays real-time status, including last signal, sine direction, trend direction, filter status, and directional bias over a configurable lookback period. Multiple alert types are supported (popup, sound, push, email).