I'd think that like all the other Garmin Edges, the Edge 130 pairs with your phone to interface with the Garmin App if you install it on your phone. The Garmin App is useful to for looking at your ride data and other metrics about yourself. Particularly if you also have another wearable like a Garmin watch of some sort that will give you step count, tell you when you are too anxious and need to calm down or maybe help look at your sleep patterns.

I virtually never review my rides on the Edge itself, but for times I'm not near a computer, I'll use the Garmin App or the RWGPS App on my phone to look at my rides.