Post-Processing Apps

iOS

• SnapSeed
• Aviary
• Filterstorm

Android

• Aviary

WP7

• Aviary

Camera Replacement Apps

iOS

• iPhoto (iPhone & iPad)
• Hueless
• Camera+
• Camera Awesome

Android

• add some here!

WP7

• add some here!

Social

iOS

• instagram
• flickr
• iso500

Android

• instagram

WP7

• add some here!

Specialty / Effects

iOS

• 360
• AutoStitch

Android

• 360

WP7

• add some here!

Utilities

iOS

• Expositor - A Exposure slide-rule calculator.
• iDoF Calculator - Depth of Field Calculator
• The Photographer's Ephemeris
• SunSeeker
• GPS4Cam - A GPX logging app for you to add geotagging to pictures taken with a non GPS-enabled camera/DSLR.
• Photo Hour

Android

• SunSeeker

WP7

• add some here!