You can share them via the Adobe Content Viewer. The recipients will need to have a verified Adobe ID.
You don't need to buy the Single DPS until you want to upload it to the App Store. Actually, you probably don't even need to buy a license if you're needing this for a selected group of people/students.
We're having issues with that.
THe other students get a message that the browser isn't supported (in content viewer)
And I have successfully previewed two folio articles on content viewer on my iPad (v. 4) but now can't seem to view any others.
But thank you so much for you replies.
Could your viewing problem be that your students have not updated the Adobe Content Viewer on his or her iPad and you have update your Content Viewer? What version of the Folio Builder panel are you using?
I'm using 5.5. To update, should they trash and then reinstall from the App store?
Actually, I can't see any of my new folios on my Ipad (4) either.
In your copy of InDesign 5.5 go to the folio builder and click on the "About..." submenu item" to see what version you are running. Update if you are not using version "126.96.36.19920504." A good resource is at the top of the DPS forum -- "Can you update Adobe DPS?" That website will tell you what builder version you should be running, what tools and viewers you need.
There are discussisons on here what keeping the DPS up-to-date and the best practices to follow.
To answer your question, I don't think you need to delete and reinstall. Your iTunes and iPad should be telling you if there is an update to the content viewer.