PhotoTagEdit

Change your photos' EXIF, IPTC, GPS... tags like a pro, directly on your iOS devices. You can select multiple photos from photo album, edit their tags, change them in a batch, and save them back to album.

The property value can be set using variables, e.g. use today's date time, use filename, create number series, create date time series, copy from other property value, replace, truncate, uppercase, lowercase ...

It also supports quick preview feature, which allows you to see the file's thumbnail while you edit it.