ShotMeta was designed to give amateur and professional photographers the tools they need to organize the metadata in their images. IPTC (to XMP standards), location, and DICOM fields can all be edited within the app (EXIF data is read only). Edits can be applied to a single image or group of images and exported via Dropbox, email, FTP (supports multiple FTP uploads simultaneously) and iTunes file transfer. Cloud settings allow users to begin edits on one device and continue on another linked to the same account.
This app usually retails for $4.99/£2.99 but today you can download it for free. Click here to download.