Haiku Deck is the Presentation Zen app which focuses on the "less is more" principle. It allows only one image per slide and a set of pre-set text options. You can uses your own images, or images available through a filtered Haiku Deck search tool of Creative Commons Flickr images. Similar to Prezi, Haiku Deck requires an account and Internet access to create presentations. Haiku Deck is free with six themes and offers in-app purchases for additional themes. Haiku Deck provides a URL link for sharing your presentation.
Keynote is Apple's alternative to PowerPoint. If you haven't used Keynote recently, I'd encourage you to talk another look. Keynote now provide collaboration options and can save to iCloud. A presentation may be open and edited or even created from the iCloud site. Saving to this site requires your iCloud settings be configured to allow Document & Data => Keynote files to be backed up. The iPad version provides a subset of the tools available on the OSX desktop version. Apple announced that qualifying new iPads purchased after Sept. 1, 2013 would include Keynote at no cost. Keynote now the option to allow another iOS device to serve as a remote - so you can preview and advance your presentation from any iOS through Keynote.
- QuickOffice (free) - now owned by Google, this app is free for anyone with a Google account. Allows users to create and edit Word, Excel, or PowerPoint files with a lite version of the tools. Can save and open to Google Drive.
- Scrollshow ($)
- 30 Hands (free)
- SlideIdea (free)
- CloudOn (freemium) - looks like Microsoft Office 2007. Opens and saves to Google Drive or Dropbox.