Explain Everything is an easy-to-use design, screencasting, and interactive whiteboard tool that lets you annotate, animate, narrate, import, and export almost anything to and from almost anywhere.
Add new or existing photos and videos. Import PDF, PPT, DOC, XLS, Keynote, Pages, Numbers, and RTF files from Evernote, Dropbox, Box, GDrive, WebDAV, Email, iTunes, and any app that allows you to open these files types using "Open In…".