HI Apptive here is my design idea. Using a finger to play or work with apps is a common thing so I thought of using a finger that looks like an A which represents the user input or response to your apps would be unique and cross platform in design. I hope you like it awaiting your comments:)
Thanks for the look - interesting concept with the A. I like the font you used, color is nice too. But I'm afraid the A could be construed as something else as well possibly a male body part. Do you have any other ideas?