Camera Face Age are faces detection and returned with rectangles indicating the location of faces in the image in pixels
and face detection can also extract a series of face related attributes from each face such as gender and age.

And also provides the most advanced algorithms for face detection and recognition and high precision face location detection that can detect up to 64 human faces in an image.

You can take a photo or browse the photo album to check you face age and gender.

Camera Face Age use the algorithms same the How-old.net - HOW OLD DO I LOOK? by Project Oxford and Microsoft Azure cloud-based Face API.