Now I am developing Wordpress websites and many of my clients are asking to create online calculators for their websites. Usually, it is required to create a calculator in the shortest possible time and therefore I decided that it was not advisable to create calculators from scratch and began to search for this for ready-made plugins. I looked through a bunch of plugins, but I could not make a choice. I hesitate between these plugins:

Have you tried these plugins, should you use them? What wordpress plugins for calculators can you recommend?