APPs for speech improvement (iOS)
Practicing speech exercises at home extends and builds the vocabulary in extremely beneficial way.
Speech enable a person to directly connect to a large number of people. It is a very effective way to change the mentality of large number of people, or strengthening their believe in speaker. For example, think about speech given by Abraham Lincoln or Martin Luther King or some other visionary. They had some vision which was essential to the human development. Imagine the way to spread their vision but not by speech, to the common people who clearly did not have that kind of thinking. Human development is possible only when all humans or majority of them are in consensus in doing some change. So to enable them to think or understand what these visionaries were thinking, they use speech.