Web-based presentations tool Prezi is rolling out an Android "companion app" that lets you view any presentation created with the service. Right now, the in-beta app is only available to Australian and New Zealand Prezi users.
This isn't a full-blown editor, but it will let you access your own presentations so you can practise them before a presentation. You can also browse public prezis from others. The app stores recently-accessed presentations, which is useful if you need to present and don't have a connection.
The worldwide release of the app is expected in 2015. Prezi is one of our favourite PowerPoint alternatives, and this is a neat way to extend it. Hit the link to install it.
Prezi [Google Play]