A mobile/android app is also favorable for us because with app we will be in touch with the exchange all the time with only one click. I will suggest the developers that they have to work on it to provide an app for us.
Access on the go, is more essential for any business as per current trends. I believe a light version of yo-ex with common browser, will be doing the requirement of mobility. But creating new an app is not a big deal now a days as lots of developers are available here in this forum itself.
If admin will be looking for apps for android/iOS/win mobile, I believe I could help a little bit on finding good developers and for deployment too.