The concept for the silver calculator came together in November of 2010 when we saw the need to make quick and accurate exchanges with silver coins and rounds.
The idea was crowd sourced in December and a number of programmers set out to create the barter exchange app that had been proposed. The Android came first with a beta app before releasing v1.0 in early January. The iPhone app was finally released in February of 2012. Most mobile platforms are now supported. We are working on improving the apps to fulfill additional silver calculating needs.