Requeriments for running codes (programs/apps)

Question

Hi! A question who comes through my mind a time ago: which are the factors who determine the minimal system requeriments (include OS) needed for running a code? I mean... i know it depends of the purpose of the code (game/video/app) but... for example, if I going to do a app for Android, how do i know if my code can run in every phone with Android or not?
PD: Sorry for bad English. between my ugly grammar and the autocorrector i don have the things easy...

Answer 1

Well, there probably isn’t a single app that runs on every phone. What you need to do is try to keep the resource use as low as possible and optimize it. You need to know your target audience. If you suspect that a majority of people, will have old phones, then you need to make the graphics cheaper to run and use a lower frame rate. To test it, either use emulators (which aren’t as accurate but can get the job done), or trying borrowing phones from friends or family or buying cheap phones off the internet