I am using Design expert (Version 8.0.7.1) from last so many years. As I am working in formulation development research, I am quite familiar with this software for designing screening and optimization of experiment. We are generally doing both formulation as well as process screening/optimization using this software. It is loaded with so many designs like factorial design, optimal design, Plackett-Burman design, Taguchi design, response surface designs etc. it demonstrated the interpretation of statistical models and linking it to chemical understanding. It helps to understand potentially significant factor and their cause-and-effect relationships on an experimental outcome. It is loaded with lots of graphical representation which provide ease understanding about the effect of variety of factors at different levels. It has also features like mixer design which is very useful in optimization of formulation. Also I can easily identify about the interaction effects of different factors. Also in 2-level factorial design you can select number of experiments based on design resolution (res III, res IV, res V). Another good feature is that this application is very easy to use and organized.

user friendly qualified graphs easy to use the price of that is logical and worth it