The program recognizes words in pictures (such as on billboards or even handwritten notes) and converts it to text, generally very accurately
www.flashmybrain.com.
You or your students can create vocabulary flashcards that can be retrieved, shared, and practiced anywhere
www.gutenberg.org
Similar to the listening idea above, you could download reading materials for your students.
www.polleverywhere.com
is a free program that allows the teacher to pose survey questions to students. Students respond by texting their responses and the results show up immediately in a PowerPoint presentation or on a website.
http://mobileactive.org
Searching for the term “data collection” will show examples of this type of research and data collection