Being a registered user of KakaSoft, you are entitled to a free copy of any minor updates to this product. For example, if you have purchased version 1.0 of the product, you will get all the further 1.x versions free. In addition, once a major revision of the software you have previously purchased is released, you probably need to pay an upgrade fee if you want to take advantage of this major update since it may be combined with a significant amount of improvements and new features.