i'm new to this and have been doing the manual stretches and jelqs and kegals, but have been reading about the hardware for Penis Enlargement. not sure i understand the difference between an [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words] and a stretcher/ADS. do they both accomplish the same thing (mainly length), or do they target different things?