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SigTester app for iPhone and iPad


4.8 ( 7248 ratings )
Business Utilities
Developer: Bonamy Finch Ltd.
Free
Current version: 2.0, last update: 5 years ago
First release : 14 Apr 2014
App size: 11.4 Mb

This is a great little app for anyone in the market research business – or for anyone who regularly deals with quantitative data.

It tells you if differences between pairs of mean scores, proportions (%s), correlation coefficients or Net Promoter Scores® are statistically significant. You can also use it to estimate confidence intervals around these types of values. A third function lets you know the sample size you would need to have a specific confidence level for any % you might expect to see in your data.

All tests can be conducted at the 90%, 95% and 99% confidence levels.