This app allows us to:
1. Add data in ungrouped form for both one and two variables.
2. Add data grouped by frequency and by intervals.
3. Open and save data.
4. Calculate statistical measures such as measures of central tendency, dispersion, position, shape, etc.
5. Graph diagrams such as: bars, histograms, radar, warheads, box and mustache, linear, dispersion, linear regression, etc.
6. Save graphics.

I hope it is of your use.