Digital cameras (including those in mobile devices) add a lot of metadata to the photos they take. These data are called Exif tags. They provide an opportunity to know not only the exact date and time of the shoot, but also parameters such as exposure time, shutter speed, image resolution, device model, ISO, focal length, etc. With PhotInfo you can access the photo library on your iPhone, iPad or Mac, select an image and view all of its metadata, delete them or modify the main tags.