SlideShark is a free app that allows mobile professionals & educators to view and show PowerPoint® presentations on the iPad®.
If you're an iPad user, you may have noticed that there isn't a PowerPoint or
Microsoft® Office app for viewing
PowerPoint files available in the App Store. In their absence, mobile
professionals & educators have had to come up with "workarounds"
that end up falling short. With SlideShark, you can easily and reliably convert PowerPoint into a
high fidelity iPad-optimized format that keeps animations, fonts, colors, and
graphics intact. That way you can view and show PowerPoints on the iPad the way
they were meant to be seen.
Check it out: https://www.slideshark.com/default.aspx