Go Pix 2.1.3

the author of this app says:

Go Pix helps photographers record and calculate exposure information. It calculates zone-system settings and supports multiple films and devices.

The program allows you to keep track of device names, types and exposure compensation, film names, types and ISO information, shutter speed, text notes, zones selected, film development, and the date that the picture was taken.

The new version allows you to organize picture information using sessions.