The Create Island Tool is a tool in Isle of Tune used to create islands. It is a grey square with the word New in the center when you are already in another island, but is an animated button when you are visiting the main page (this does not apply to the iOS version). Click on the tool and it will automatically take you to a new island, quite similar to a link. Using the iOS version, it seems to zoom in after you click on the Create Island Tool, so simply pinch the screen and it will zoom out to let you see the whole island again. The website doesn't seem to have this issue.