An appliance is a small machine or device that does something useful. Sometimes you refer to something as a gadget when you suggest that it's complicated and unnecessary. Sale of kitchen utensils including toasters, kettles and percolators. It's pronounced gah-jit, slang for any hardware device, usually small.
Synonym of gadget. Smartphones, tablets, and portable game and music players are sometimes placed in the device category. Widgets and devices are lightweight applications that allow users to interact with other applications or websites. The only difference between the two is that widgets are designed to work on multiple platforms, while devices often have limited functionality.
We've compared both to help you understand the difference between these two types of applications. In the context of software, both devices and widgets can be considered applications, but they are not like traditional standalone programs. Both the device and its interface can be considered devices, since each depends on a separate application running on a smartphone.