Let's clarify, shall we?
If you eat more, you will gain size, and size equates out to more weight.
If you eat less, you will lose size, and thus this equates to less weight.
Within the amount of what you are eating (also known as calories) are what these foods are comprised of (also known as macronutrients, or protein/carbs/fats in laymans terms).
The amounts and macros of foods consumed will determine more than anything else what your shape will become, whether you gain or lose, whether you 'bulk' or 'cut'.
Now, yes there are supps that will help you bulk, and conversely supps that will help you cut. But diet will be the #1 determinant factor.
So, if you want to gain muscle mass/bulk, you must be in a caloric excess.
If you want to lose fat/cut, you must be in a caloric deficit.
And this leads us to:
Prime/AP stack will help you bulk, given that you are eating enough.
Prime/AP stack will help you cut, given that you are eating less/keeping foods clean/keeping physical activity up.
These are quite unique and versatile products that you can tailor to your own goals.
It is really quite simple.
Hopefully that clarifies things.