knapkin app for iPhone and iPad

knapkin is a building design sketch tool!

knapkin is a simple app that allows designers to check the performance of spaces inside buildings. It is a tool to help you iterate through design quickly, checking against rules of thumb in good building design practice. knapkin will help you answer questions during design:

How big should the window be for good ventilation?

Is there enough daylight in the room?

What are common design parameters for typical spaces?

How much air is needed to remove heat gain in a space?

The app is a suite of six, easy to use modules, with other exciting modules to be added in the future.