If you've never seen an augmented reality app before augmented reality is sort of like having helpful pop ups follow you in real life that are marketed to have a stronger use case than simply looking something up on your phone. They are normally seen through a headset or camera lens.
Google glass has made me incredibly disenchanted with augmented reality apps after having used the device for a long period of time. Every strong social use case out there seems to be a gross violation of privacy.