If you would like a break from Powerpoint and want to try a simplified Voice Over Presentation tool, look into Educreations. This is available for desktop and mobile devices using the Educreations mobile app.
Educreations is basically a whiteboard you can draw on and import photos or slides from your computer or mobile device, and add audio.
Follow the link below to view an example created on an iPad, showing changes to the new version of the Angel LMS.
Another version incorporating slides from Keynote, apples version of Powerpoint. Also all done on one mobile device.