Spark Core is a companion app for the Spark Core, a Wi-Fi development board from Sparkfun that allows you to create internet-connected hardware. It's a small, simple device that you can use to experiment with internet connectivity in real-time.

Spark Core makes it easy to use the Spark Core to connect to the internet and control it with your smartphone or tablet. It will let you turn the device on or off, set the Wi-Fi password, and configure the WiFi settings. You can also use it to create a network, choose the name, and select the IP address.

Once you have configured the device, you can start to build your internet application. You can connect to a server over the internet, and send it data. You can also control the server, and collect the data.

Spark Core has a built-in web server that will let you access the internet. You can use it to create an application that will serve data to your device.