LucidChart

Looking for a free and easy flowchart app? With Lucidchart's iPad application, you can create stunning flowcharts, wireframes, mockups, UML diagrams, ER diagrams, and much more!
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Often students and even teachers need to draw different shapes and diagrams to eloborate a process. LucidChart is there to help them to deal with such situation. Make any shape, flowchart or wireframs easily.