We’ve written today about Trey Songz and Snoop Lion using their own apps to connect with fans, but there are a growing number of third-party apps trying to provide the platform for artists to do the same thing. Two more examples this week: Upfront and Hang w/. The former has launched on iOS and Android, and promises fans it’ll get them “up close and personal with your favorite artists, innovators, celebrities and brands”, paying monthly subscriptions to follow individual accounts. Music artists Maxwell and Hillsong United are among the first on board. Meanwhile, Hang w/ launched earlier this year as a live video-chatting iPhone app, and has been downloaded 100k times so far. Now it’s taken investment from producer Timbaland. “I’ve seen the power of social media and how a simple tweet or Instagram pic can bring awareness to an album,” he says in a statement. “I think Hang With takes things to the next level. I believe the entertainment industry will line up behind this application and I intend to be at the head of the line.” We’ve seen buzzy video apps adopted by artists before – Viddy, anyone? – but it’s too early to tell whether Hang w/ can build a more sustainable popularity among smartphone users.