I wrote a response to his post that provides some info and example code for making an offline app that will sync data with a server side app or database.

Rather it helps him or not depends on what web stuff he's familiar with, but I also offered to help if he needs it. Rather or not I can is the same though.

I do hope he gets it done though, I like the idea and think it could be a fun site for all those hiking and following hikers, or just interested in the AT.