You can search for Component Visualizer in the Google Play store, or look here.
I created this is an Android App to help me visualize the size of electrical components while designing PCBs. Size is often an important consideration during the component selection process, but it can be hard to get an intuitive feel of the size simply by looking at the measurements in a datasheet.
This simple app accurately draws a rectangle with the dimensions of the component. It is meant as an improvement over grabbing a ruler (or set of calipers) for visualizing the size of the footprint required by the component.
You can leave feedback, bugs, and suggestions on the App’s public Trello board here.