  A freely available educational application (a mobile website) is presented.
This provides access to educational material and drilling on selected topics
within mathematics and statistics with an emphasis on tablets and mobile
phones. The application adapts to the student's performance, selecting from
easy to difficult questions, or older material etc. These adaptations are based
on statistical models and analyses of data from testing precursors of the
system within several courses, from calculus and introductory statistics
through multiple linear regression. The application can be used in both on-line
and off-line modes. The behavior of the application is determined by
parameters, the effects of which can be estimated statistically. Results
presented include analyses of how the internal algorithms relate to passing a
course and general incremental improvement in knowledge during a semester.
