| Upgrade DVD-Cloner for Mac 4 will check version update regularly. If there is a new version available, an information window will pop up automatically and show the information about the new version and the latest news when you run DVD-Cloner for Mac 4. If there is no new version, the information window will not pop up. If you want to know whether your current version is the latest one, please enter the "About" window and click on "Check upgrade". You can also visit our site at www.dvd-cloner.com/dvd-copy-for-mac.html to learn the latest information about DVD-Cloner for Mac 4. Upgrade policy If you bought DVD-Cloner for Mac 3 or its former versions within one year, you can upgrade to DVD-Cloner for Mac 4 for free. If it exceeds one year, please pay to upgrade to DVD-Cloner for Mac 4 and enjoy one-year free upgrades of its future versions.