Compatibility: OS X 10.8 or later 64-bit

Mocks allows you to rapidly create beautiful, high-fidelity mockups of iOS, iPad, and iPhone applications. It is a modern, native app for OS X that gives you special tools to design mockups of iOS applications and screens. Mocks comes with a built-in collection of graphics depicting iOS icons, UI controls, and widgets (like buttons, toolbars, and text fields). Drag these controls from the Library palette on the left to the central Canvas area where you compose your mockups. Alignment guides (both automatic, and user-created) help you keep your designs in line.

Every Mocks composition is a multi-page document

Homepage: http://celestialteapot.com/mocks/