The flourishing of various mobile devices stimulated the explosive growth of the mobile Apps. From the rapid development of the mobile market, we can see it’s an age of accelerating technology on mobile App design and development. One of the most important part during App development is building wireframes which can reasonably organize and simplify the content and elements. Low fidelity is the key feature of wireframes. It will present the design idea and App prototype of the product in a more intuitive and simple way. In addition to saving time, wireframes but also provide great advantages for designers focusing on product user experience. Here is a list of the 5 best free wireframe tools for mobile apps in 2017. 1. Paper prototyping Pricing: free forever Pen & paper are the total free wireframing/prototyping tools, no matter from the point of time & capital cost, usability, learnability, as well as the practicability. Comparing with other wirefra...