From Profhacker:

If you’ve ever wanted to do sophisticated text analysis on your smartphone, you’re in luck. The University College of London Center for the Digital Humanities team made up of Melissa Terras (@melissaterras), Steven Gray (@frogo) and Rudolf Amman (@rkamman) has just released Textal, a free smartphone app currently available only on iOS that allows you to analyze websites, tweet streams and documents, spitting out an intuitive word cloud from your search from which you can see word frequency and collocates (words that often appear next to your selected words) at the tap of a finger. —First Look: Textal, A Free SmartPhone App for Text Analysis – ProfHacker – The Chronicle of Higher Education.