To delete a project, you have to tap on the project menu and swipe your finger on the projects you would like to delete. You will see a little trash bin in the right corner. Click on it and the project will be deleted.
CREATE A NEW PROJECT
Tap on the project menu and in the pop up toolbar in the top left corner, tap on the little "+" icon. By clicking on this icon, a new project will be created.
EDIT (RENAME) A PROJECT
To edit a project, you have to tap on the project menu and in the pop up toolbar in the top right corner click on the "edit" button. Now, all the projects are editable, you can change there names and you can also delete them with the trash bin icon.