No specific info about version 21.3. Please visit the main page of Photo Information Viewer -EXIF on Mac Informer.
Small application which displays EXIF information in JPEG files coming from digital cameras.
View live video content from connected FireWire, USB cameras and other devices.
Manage and edit photo metadata information on your Mac computer.
Created for removing EXIF information within digital photos with JPEG format.
This app allows you to view and edit your iPhone photo exif data.