Education apps
A big potential for apps, I think is in schools and education. In recent studies done by the AVG Digital Diaries, it was revealed that 66% of children between the ages of three and five can go on to the internet and play a video game, 47% of the age group can competently use a smart phone. However 14% of the children can't even tie their own shoelaces, and 23% of these children can't swim.
-http://www.computerweekly.com/news/2240213733/Children-more-skilled-at-using-smartphones-than-tying-shoes
-http://www.telegraph.co.uk/education/educationnews/9122180/Schoolchildren-can-use-an-iPhone-but-cannot-tie-their-shoelaces-poll-finds.html
Apps like;
Hubble Space Telescope Discoveries
https://itunes.apple.com/us/book/hubble-space-telescope-discoveries/id588428410?mt=11
Khan Academy
https://itunes.apple.com/nz/app/khan-academy/id469863705?mt=8
Teaching with Technology Video library
https://itunes.apple.com/us/app/teaching-technology-video/id460913574?mt=8
Science House
https://itunes.apple.com/us/app/videoscience/id333284085?mt=8
All focus on education and the accessibility of knowledge. These apps use simple interfaces which typically revolve around video, or small easy to read sections of text.
The other areas were I think apps particularly stand out is in business, things like the Trade Me app and the Amazon app. Have similar aspects to the education apps, in the sense that they bring something to the individual anywhere they can access their phone.