Embodiments of techniques and apparatus for open angle detection and processing are described. In embodiments, an apparatus may comprise a first panel having a display, a second panel movably coupled with the first panel. The first and second panels variably define an angle between these two panels. One or more sensors may be disposed in the apparatus and configured to detect an angle change event of the variable angle between two panels. The angle changing information may be used by an application to vary output of the application onto the display. Other embodiments may be described and claimed.