Here is a great list of App awards from iEAR.org All are listed by curriculum area, elementary/secondary level, and iTunes link is provided for each app as well.
"Record and playback digital recordings up to 5 minutes long which can then be posted on" to your personal Audioboo profile page.
You can record your "boos" by phone, with the iPhone app or through your web browser.
AudioBoo is iTunes ready making it the easiest way to begin podcasting.
Pictello is a simple way to create talking photo albums and talking books on your iPad, iPhone and iPod touch. Each page in a Pictello Story can contain a picture, up to five lines of text, and a recorded sound or text-to-speech using high-quality voices. Stories can be shared using iTunes File Sharing or via WiFi with other Pictello users through a free account on the Pictello Sharing Server.