Story Wars

It is a great hub for writers, where many writers share their thoughts where you meet many writers around the world.

It has an iOS app and also google chrome extension.

Any person can pitch an idea and create a story, but the moment the story is published, it is no longer truly theirs, but it is adopted by the Story Wars Community. Different users can write a chapter to a story that they like and want to contribute to. The twist is that for your chapter to be official, it has to be voted in. By going up against different authors, you actually have to try. Because of that, you slowly start to become a better writer.