Not totally clear on what you are wanting to do. Can you provide more info? Maybe a screen shot pointing out what you are wanting.

Do you have a mobile app? or just a oxwall website?

Website

Use this tool, it will create all of the different favicons that you need. Those aren't called favicons, I know, but this generator will do what you want. Recommended image of about 260x260px.

http://realfavicongenerator.net/

lol bryan thats no favicons thats an  apps she wants a mobile app

and sadly there is none that are any good 

I understand, Tammy. If you save your web page onto your mobile home page, it will display it the way she wants it. It won't be an app, but it also won't be just a generic icon that Apple/Android decides to give. Here's what it looks like with my website on my mobile phone (it's not an app, just an Oxwall website -- the "Beard Profile" image):

Bryan measures that you did for the icon for both smartphones iPad? and where it is posted on the website

The favicon generator I linked will make all the images you need to upload to your server. Then you can follow instruction like this to add your site to the home screen: http://www.pcadvisor.co.uk/...iphone-ipad-3447887/

Morena, your request has nothing to do with the software, please do the search on google. 

Solved thanks!