Insight timer's been great for me. I love seeing the charts and statistics about my meditation, it is really quite helpful. The social aspect really is very small, sometimes I receive messages from people I don't know thanking me for meditating with them. I feel like responding: "Really? I didn't know I was meditating with you, have you been sneaking into my lounge every time I sit down for meditation?!?
But for some the social aspect is quite helpful, there are various message boards for people in their respective groups, and it allows people to keep in touch and or ask for advice just the same as this board here.
All in all, I couldn't recommend it more.
"For a disciple who has conviction in the Teacher's message & lives to penetrate it, what accords with the Dhamma is this:
'The Blessed One is the Teacher, I am a disciple. He is the one who knows, not I." -