Chebyshev Trend Family Technical Analysis mobile and desktop apps started grow around Chebyshev polynomials.
This innovative trending method is based on creating polynomials using a modified Gaussian least squares fit that essentially acts as a noise filter, removing random fluctuations from the chart data and finds the real underlying trend.
The main benefit of using this trending method is an almost complete absense of lag, when compared to moving average trends.
Later classical MA & Bollinger Bands and more indicators and oscillators was added for comparison.
Classical Fourier and modern Neural Networks based Prediction methods was added to app family also as separated apps and plugins.
Major apps source Stock data from the Yahoo Finance website but some special version can use other sources.