iPhone Screenshots


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.

What’s New

Version 2.0

Added significance test for Net Promoter Scores®.

Compatibility for iOS 11 and iPhone X.

Ratings and Reviews

red.igloo ,

Best app of its kind

Thanks very much for updating the app!!
Best app out there for significance tests.

Linds3675 ,

Very handy

A very handy app for quickly testing for significant differences between two scores. Easy to use. Covers mean scores and even correlations as well as %s. If you want to find the confidence limits around a single score, you can also do that, and you get a range of confidence levels on all the tests in the app.


Bonamy Finch Marketing Services Ltd
12 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© 2014 Bonamy Finch Ltd.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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