Hi, I have used the package pwr in R, but it falls short when compared with the GUI program G*Power (https://gpower.hhu.de/).
G*Power has a wealth of options and analyses but pwr is more basic.
https://www.psychologie.hhu.de/fileadmin/redaktion/Fakultaeten/Mathematisch-Naturwissenschaftliche_Fakultaet/Psychologie/AAP/gpower/GPowerManual.pdf
Are there any other packages that incorporate all the features that G*Power has?