Try out crochet programs

I have lots of ideas now, but I don't really know where to start.  I want to find a crochet program,  so I could make my patterns in the program. Well I have looked around on the internet and found some different programs. Some of them, that cost, and some that is free. I think I would try out the free ones first.

Here is one you do online:
https://www.stitchfiddle.com/en

Here is a program:
http://stitchworkssoftware.com

Here is an android app:

I'm going to try this one first and see how it goes :)