Simple stat appliction provides basic statistical tests.

Simple stat for the IPAD provides basic statistical tests. These are

1. Z-test for mean
2. Z-test for proportion
3. t-test for mean (sigma unknown)
4. two sample t-test
5. paired T-test

YOu cant complain about the price (it is free). These are quite easy to implement as a web service. See for example our very own Extreme adorio-research.org


All statistical tests are double-sided tests.
We expect this software to grow in features.