LoLSkinView is an application that allows league players on all regions to find out just how much they have spent. Along with showing you an averaged out amount that you've spent total, it has the ability to report your owned skins. You can display detailed information about each individual skin that you own. This includes the price of the champion, the date it was released, when it was discontinued (if it's not available anymore) plus much more. All the data is directly sent from Riot's servers and not tampered with. LoLSkinView doesn't require you to login/logout. You can just open the application while logged into the client and grab your skins, close the application and you're done.