The applications presented here were born out of need to have a solution to some engineering problems always in the pocket. Out of office, on the run or at a building site and need a quick decision on a pipe or duct diameter? Or need to quickly size a radiator?

These apps will help. They provide a quick answer to these questions. They are simple to use, but they also provide a way to get specific.

This is a collection of tiny iPhone apps that can be used on the go or in the office. With a little engagement they can help with a number of engineering problems, and, in some simpler cases, replace some much pricier software that can't even be used on the go.