In string theory, one of the many vibrational states of the string corresponds to the graviton, a quantum mechanical particle that carries gravitational force. Thus string theory is a theory of quantum gravity.
Their average web application development cost is around $500K and their staff or contractors' salary is in the six figure plus range. Their proposals are usually based on a lot of fluff with the development rate ranging from $400 - $800 per hour. These types of companies focus on custom development.
These programmers must not only be familiar with such programming languages as C++ and Java, but also understand how the devices function and communicate with the Internet. Mobile app developers received a median $80,000 per year, with a low of $65,000 and a high of $90,000.