Modern Neutral App Icon & Logo

I need a fresh visual identity for my new mobile application and want both the main logo and a complete set of app-store icons created from the same concept. The look should feel unmistakably modern, relying on neutral, more subdued tones rather than bright colours... (Budget: $30 - $250 USD, Jobs: Adobe Illustrator, Adobe Photoshop, App Design, Graphic Design, Icon Design, Logo Design, Photoshop, UI / User Interface, Vector Design, Visual Design)