White light:Start brewing/end brewing
Green light:dump
red light:stop dumping
Purple light:stir coffee
In addition to just showing the lights, Oura lets you know if the flow needs to be adjusted. If the green light is blinking, it means you need to increase the flow rate; if the green light is blinking, it means you need to decrease the flow rate. It also gives you audio cues that the next or current pour is about to start/end, so you're never left in the dark (pun intended).
At the end of your brew, Oura records a timeline in the app detailing your pour pattern, accuracy and timing - it'll even give you a score afterward. You can choose to brew using the app (which gives you more data), or you can just brew using the scale.
There are three preset recipes built into the scale, which is helpful if you're just getting started, but you can also add three of your own via the Pourx app. Sharing them with your friends is easy, Oura creates a QR code that your friends can quickly upload into the app and vice versa.