The disruption of spreadsheets is evident in the new way that Sheetlet present data in confined grids as tables, distinguishing between data grids and calculation grids.
The confined grids are presented either vertically, so that you navigate by scrolling, or on different pages/slides - you just flip your thumb to navigate between slides.
Though data is presented in confined grids, it is easy to process data across slides. In order to subject data to calculation, you drag the relevant calculation from the menu and drop it underneath the relevant grid you wish to calculate, thus creating a calculation grid. Sheetlet automatically base the calculation on the above grid.