I thought that, if it had not already happened, there was a barbershopper somewhere out there, that was going to write an app that can be run on a smartphone to help us learn our parts, so I started a Google search. It looks like there is nothing available for teaching us whole songs yet but there are a few apps available that teach us tags and I came across them through a website at http://www.barbershoptags.com/. About 3/4's of the way down on the left hand side of their home page is a list of 5 apps that are dedicated to the teaching of tags. The only app that is good for my Andraoid phone is called "Tag Master", but for those of you with iphones, all of the apps are good and I suggest that you try them out.
The website at http://www.barbershoptags.com/ is also a good site for all of us, whether we have a smart phone, a computer, or both and I suggest that you all visit the site and fumble around it and try learning how to use some of what is there. Simply click on the links highlighted in this writing or go to the Links page of our website where the link will be posted.