Sending a .gpx file from one user to another.

I used Explore to share a .gpx file. I sent it via text. iPhone to iPhone. Both of us have explore installed. The other user was unable to open it via text. I emailed it to him and it opened in Connect. 

This isn’t super user friendly. Neither is having so many apps. I use Explore, Earthmate, and Connect depending on my hardware. 

Is there a better way to share my activities?