Alesis ProTrack Handheld Stereo Recorder for iPod

If you've got demanding needs for recording audio on the go, this iPod-compatible accessory is an attractive -- if complex -- option that will satisfy audiophiles.

FiRe Field Record and Blue FiRe for iPhone

We look at two audio capture apps -- along with some hardware options for boosting your sound quality -- and find that it's hard to go wrong with either version of FiRe as the basis for your pocket sound studio.

Contacts Journal for iPhone

This lightweight CRM app proves useful for anyone who needs help in keeping track of their communications and commitments.

Photo geotagging apps for iPhone

Geotagging -- adding data to a photo that reveals the location it was taken -- brings a new dimension to enjoying and sharing photography. Several apps let you start tagging your photos with GPS data. We'll help you find the one that's right for your needs.

Depth of field iPhone apps

A number of iPhone apps promise to help tame the sometimes complex calculations needed for success when attempting to control depth of field. We look at three, each focused on satisfying different types of photographers.