An examination device for use with a mobile device comprises a housing removably coupled to the mobile device. The housing may be coupled to the mobile device by a rear surface, opposing side surfaces, a top surface, and a retention lip that extends over the front of the mobile device. A retention structure may be mechanically coupled to the housing and may also define a rectangular slot. A tongue depressor may be retained by the retention structure and may also extend away from the rectangular slot. A cutaway may be defined by a wall of the housing. The cutaway may be positioned on the housing to expose a camera of the mobile device facing towards the end of the tongue depressor. The examination device is configured to manipulate an oral feature of a mouth while the camera of the mobile device captures an image of the mouth.