How are these icons nade?

[prahsper]

Hi,
Does anyone have any idea what program was used or what program can be used to create these kind of actual working icons?
I would like to create icons such as these for my Android phone. Any ideas would be greatly appreciated. Thanks.

https://i.imgur.com/ODPcuTv.png

 

[B. Diddy]

I moved this from the General News forum to the General Help forum.