PhotoStacker has a number of advanced features that are available to all users for a trial period of 14 days. After that time, some of the advanced features will be disabled until you purchase a license key for $14.99. All of the features available in the previously free PhotoStacker (v.1) are still free in the completely new version, and always will be. We would encourage you to download the new version of PhotoStacker - we've significantly enhanced the appearance, performance, and capabilities - so even if you choose not to upgrade to the Pro version after 14 days you will still love the new PhotoStacker!
PhotoStacker is built using the Microsoft .NET Framework 2.0, so if you do not currently have this installed you will need to do so before successfully running the software. We recommend using Windows Update to keep your computer up-to-date, which includes .NET 2.0. If you'd prefer, you can download it directly from Microsoft here. PhotoStacker currently requires Windows 2000/XP/Vista, and we are actively working on a Mac version.