It is very user friendly for any beginner engineer who wants an easy way of modeling pipelines with ease! The software does not have all features that are available when using other simulators such as FLOW-3D or PFLOTRAN but it will do just fine if you know what your doing (and how much time/effort its going into). I would recommend this product over others because there isn't anything better out right now unless they come up wtih something new thats even more advanced than PFFlow which has been around since 2007!! If i was looking specifically fo pipeline analysis then go ahead & use pfflow instead however don’ t get fooled by their marketing hype - dont waste money buying products like these only once every few years. You can easily create models within minutes without having knowledge about piping flows etc.,.