PsyPad:About
From PsyPad
PsyPad is an open source app for iPads and an associated server that allows basic visual psychophysics experiments.
If you use PsyPad, please cite the following article.
PsyPad: A platform for visual psychophysics on the iPad Andrew Turpin, David J. Lawson, and Allison M. McKendrick J Vis March 11, 2014 14(3): 16; doi:10.1167/14.3.16