The Trend Persistence Rate Indicator was created by Richard Poster (Stocks and Commodities Feb 2021 pg 12) and this indicator is a good trend strength indicator similar to ADX. A good strategy with this indicator according to the author is to combine this with a moving average crossover strategy and a volatility indicator. Buy when the price crosses over the moving average and when the volatility and this indicator are over a selected minimum. I think 30-40 as a minimum for this indicator works well. Exit that position when this indicator peaks and starts to go down and it should be very profitable for you. I have included general buy and sell signals with this indicator as well.
Let me know if there are any other indicators you would like to see me publish!