Rockers are also snapchatters.
Three customers used the Snapchat app the most to document Guns N' Roses at Slane last weekend.
The app was used to share the concert experience by almost 19% of people, followed closely by Facebook.
But fans are also a big fan of WhatsApp, 90% of customers using the messaging app.
Instagram accounted for just 4% of data used at Slane, with Twitter on less than 2%.