How to Make a FaceTime App in Two Hours Instead of Two Days

A lot of these projects that I do spent two hours on or two days on I might like not continue them so I might work two days and then think yeah this is not gonna work. The next time I want to do something in a similar field in those two hours I can get a lot more done just take the code from the two-day project. For example making a making a map is two minutes work right instead of two days. A lot of times it's easy to make a variation of one app by just taking the two weeks version from another app and adjustingSomething for example I made I made an app last year which is just a picture-in-picture browser  and