If you are going out to track a walk to create a GPX file for the basis of an iFootopath walk please use the GPS tracker within the iFootpath App. The iFootpath App tracker has been designed to make sure that right information is collected in the right format. Using other trackers will just complicate the process and probably result in a GPX file that cannot be used.
If you already have a detailed walking guide with a GPX track (created other than using the iFootpath App), full route directions and pictures of the route it may be possible for us to convert it for publication on iFootpath. Please get in touch and we would be happy to take a look.