From FluidUI: FluidUI is a mobile app prototyping design tool. It is fast, user friendly and very intuitive. It has been designed from the ground up with one aim, to save you time and money when prototyping and gathering requirements. Produce low fidelity wireframes, or high fidelity prototypes. Rapidly see and interact with them on a mobile device to aid testing and design. Supports iPhone, iPad, Win 8, Android and Android tablet.
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