I have been, own the app, but I figure there must be something more to it. I weigh in at 175, so my sheer force, weight, and tension are all below 200lb. Everyone recommends against Paracord 550, which is rated at 550 lbs, so there must be something more to it that what the app shows.
Life should not be a journey to the grave with the intent of arriving safely in a well preserved body, but to skid in broadside, thoroughly used up, worn out, and loudly proclaiming Wow! What a Ride!