How smart is your digital device? The answer might depend on how many—and which—apps you have downloaded and how you use them. Developers have harnessed billions of ones and zeros to create resources that please our four app-happy lighting designers and give them the resources they need, from color swatches and gobo patterns to light meters and note taking, all in service of portability and mobility on the job. There are also a few things these designers wish existed in the app store. Let’s take a look at what they are using and how.