PDCheck AR is an iPhone app developed by EyeQue Corporation, available as a full version under the Lifestyle category. The app uses Augmented Reality (AR) technology to measure pupillary distance, which is one of the essential numbers required to order glasses. The app is compatible with all iPhones that have Face ID capabilities, including iPhone X, XS, XR, XS Max, and later models.

The app requires no objects such as tape measure or credit card to measure pupillary distance. It measures both far and near pupillary distances, including the left and right pupillary distances. The app is perfect for ordering EyeQue's Try-On Glasses after using one of their MIT-patented vision tracking devices. Additionally, the app is useful for adjusting virtual reality (VR) headsets. PDCheck AR allows users to share their results via email, making it easy to order glasses online.