AudioBoo and iPadio are two voice applications. Both iPadio and AudioBoo are easy applications to use. I prefer using AudioBoo because of it's simplicity, but both are easy to use. You can download these applications to your phone and begin using them. Once you download and set up an account students can begin recording. You can listen to the recordings on your phone or from your computer.
I used these applications to record students reading their writings. Listen to what they wrote at, http://audioboo.fm/JQWTeacher. Other ways I will use these applications is to record students reading their leveled readers. They can practice fluency by hearing theirselves read.