Meant for MAGICIANS!
Everyone, lets think logically here: how could an iPhone make a spider appear on the back of someones hand? Answer: it cant. This app was (and still is) intended for magicians/magic enthusiasts... The props required to perform the effect are owned by most magicians because of an old card trick on the market, however you have the ability to purchase the props within the app... Anyways, unless the app keeps crashing when you try to open it, dont leave bad reviews just because you dont have everything available!
Oder43 about
Magic Spider - My Pet Boris, vV2.2