iOS, iPad Air)
Interpolation Calculator by David Brewster on the App Store (iPhone, iPad, iPod touch, iPad Mini, iOS, iPad Air)
by David Brewster
Anyone who needs to look up numbers in a table, and needs to interpolate/extrapolate between values will find this very handy.
Pilots, engineers, flight planners, construction/contractors... the list is endless for those who use performance type charts.
Those who constantly do interpolation will know how to use this program right off the bat... people who don't need to do interpolation... not so much. ;-)