The best part is it's free! I have used pingable to test my website speed before launching any new feature in our product development pipeline - this has saved us from making costly mistakes during launch phase as well helped me understand how fast different parts are loading by comparing with other websites we use internally at work place too which was great experience so far using PINGABILITY tool!! Nothing much yet but will update you guys once i find something good about them :) Great way if testing your site performance / load times without spending money. We were able get some cool insights into what needs improvement after doing tests over multiple devices/ browsers etc.,.