I couldn't discover an appropriate forum so I picked this one!

I'm embarking on a project to map a local area with the goal of sharing maps with marked waypoints. I've been successful in exporting the data from my iPhone app to email. The current stubmling block is a method to view graphically the exported .gpx file (I believe it's in xml format) below is a sample of the exported file.
Code:
<?xml version="1.0" encoding="UTF-8"?>
<gpx version="1.1" creator="Maps+" xmlns="http://www.topografix.com/GPX/1/1">
<metadata><link href="http://izeize.com/mapsplus">Maps+</link><time>2013-04-23T16:54:11Z</time></metadata>
<trk><name>Track</name><extensions><total_distance>2001.368253120224</total_distance><total_duration>1167.917102992535</total_duration></extensions><trkseg><trkpt lat="38.83968916794935" lon="-77.47663782794834"><ele>91</ele><time>2013-04-23T16:14:48Z</time><extensions><horizontal_accuracy>10</horizontal_accuracy><vertical_accuracy>8<
TIA for any advice