Yeah, there is. It's called Retrospec. Looong story - like, seriously long. Basically reality is a lie and weird things happen all the time that no one really notices or thinks are weird until they get pulled onto this app.

[At which point he'll just whip out his own phone, so he can pull up said app! The network is there, bustling and full of people who are either very old grizzled veterans, or confused newcomers.]