ScreenChomp is a free app for creating and sharing short tutorials or lessons on your iPad. ScreenChomp provides a whiteboard on which you can demonstrate things by drawing and talking people through your instructions. ScreenChomp records your voice as you go. When you finish your recording share it to ScreenChomp.com where a shortened URL will be provided for you to share with anyone you like. From ScreenChomp.com you have the option to download recordings as MPEG-4 files.
Applications for Education
If your school has purchased iPads for your classroom, ScreenChomp could be a good app to have to students use to create and share short demonstrations of their understanding of a particular topic or concept. ScreenChomp reminds me quite a bit of Show Me so you might want to do a comparison and decide which one works best for you and your students.
H/T to Silvia Tolisano at Langwitches.