John had downloaded the Improvement Button. Loading up the app he saw a questionnaire that was "To make your experience better" It had a few things such as gender, age group, other demographics, ... certain preferences. John had put in some inaccurate information but most of the information was generally correct. He was a male teenager who was currently in high school for instance. After the somewhat lengthy questionnaire the actual app opened up and it was a black screen with a bright red button. Remembering what the boob app could do he thought about things he would want to improve and thought that the app would be more of a "aim and shoot" sort of thing. he went to his computer and pressed the button thinking "make this better". The case hadn't changed but upon booting it up and checking a few things found that it now had two gtx titans inside. Looking at the monitor he pressed the button and it became a wide, curved, high refresh rate, potentially 8k monitor. John thought to himself "This thing can make things better... I wonder..." He lifted his shirt and saw his belly was kinda flabby. He pressed the button and the fat rippled as it hardened as his body became more and more fit. Looking at himself he found that while he was fit he didn't have a six pack, he was simply pretty healthy. Then a quick thought he pulled his pants open and pressed the button and he found his dick and balls expanding in his pants making his bulge a bit more pronounced.
John then started thinking about other things. His sister could use a little improving and his girlfriend could always use a touch-up here and there. Then there was the curious idea that maybe the changes were based on either his thoughts or just completely the survey so he was considering doing some more experimentation beforehand.