Whether you go to the NZXT website as I did to get the software, or you install it off the included disc, this is what you get when it first opens. This is what is called the dashboard. Here you get a reading of the coolant temperature and the fans speed at the top. The two windows below offer you the CPU temperatures which for some reason didn't show up when I took this image, but later worked as tests were performed. The last window covers the speed of the pump.
The software also offers a graphing feature for logging temperatures and fan speeds. The top chart will show the speed of the fans, and this is in extreme mode and with fans that should spin at 2000 RPM, they are only reading at 1700 in this chart. As for the temperatures it is currently taking a measurement once every 30 seconds, as that is minutes of the hour and seconds being displayed.
In the fan settings, you can change the fan speed. In the Extreme mode it is currently running, you can see the wild curve should have allowed the fans to run at their full speed, as the 68 degrees we got in the tests is past the 100% setting at 61 with this mode. You get a much more normal curve for silent mode; it just takes much longer to reach full speed. Then with the custom mode, you can slide any of those five blue balls on the chart to levels that you see fit for your demands.
Light settings are where you can address the color of the head unit. At the top you can either slide the three sliders or use RGB codes directly input into the boxes to the right of them, and shows the current color you are trying to achieve in real time. There are also effects, where you can allow color change by temperature, what color to fade to, and it will pulse the lighting when the color changes. You can also set the temperature where this happens, the interval of the strobe, and how long the light stays on.
In the general settings, there is everything else you could need. You can swap the temperature scale, start this app minimized, auto-start, and enable the statistical logs and at what durations. Along with being able to select your language for the software, you can set notifications for the liquid temperature if it goes over a certain temperature, and you can even add a tolerance of a few degrees to that setting. You also will be warned if the fan speed goes to low, sort of a failure warning so that if the fan does die, you don't take out the rest of the cooler and possible the processor if speed step is disabled with your overclock.