How to do levitation photos without having photoshop

A lot of videos on youtube explain how to do levitation photography using photoshop, but if I don't want to use photoshop why is too expensive or too heavy for the computer? It's possible doing that with an Ipad or even with an Iphone!
Soon I will post the video tutorial, all you need is:

-digital camera or an Iphone but my advice is to use a camera
-A tripod or a stable surface for the camera
-A stool or some object to hold whatever you're trying to levitate
-Ipad or Iphone,better an Ipad for the screen dimension
-Filter storm pro app