June 1, 2017 (Vol. 37, No. 11)


Strong Points: Easy to use, simple interface
Weak Points: Limited export options, no background information on statistics

iPad, iPhone



An important aspect of experimental design is power analysis—that is, determining the sample size that is needed for the experiment to be able to detect an effect of a particular size with a given degree of confidence. The Power Analysis app provides an easy means for researchers to do so without requiring advanced knowledge of statistics. The app simply walks the investigator through a series of questions—what would you like to calculate, are you measuring one sample or comparing two, and so on—and calculates the required sample size given the user-inputted parameters. Within the app, users can create and save individual experiments for reference (though, unfortunately, the information cannot be exported in any way other than by taking a screen shot of the experimental parameters).

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