We last wrote about music marketing startup Onesheet when it added support for iTunes to its service (Bulletin, 9-Feb-12). Now it’s made an equally significant addition: Onesheet Mobile. Artists creating profiles on the service – which pulls data and content in from all the online services where they have a presence – can now sign up to have their page optimised for mobile. That means web apps that look better in smartphone browsers, complete with the ability to save a link to them on the homepage of the device. Onesheet Mobile is part of the premium Pro Package tier, which costs just under $5 a month, but this still makes it a cost-effective way to get a mobile web presence up and running. The downside: not all of the widgets that can be installed on a Onesheet webpage play nice with mobile yet.