The Professional subscription includes:

• Developer license - When your subscription expires, you can continue using the last version you obtained or are eligible to use.
• Software maintenance: 12 months of free updates - Whether it's a minor update with a couple of bug fixes and improvements or a large-scale update that adds support for the new Office version, you get all the updates for free.
• Technical support service: 12 months - Help with any questions regarding the functionality of the products, programming issues, explanations of error messages, deployment and debugging.
• Keeping up-to-date: 12 months of participation in beta programs - Normally, every major release is preceded by 2 or 3 betas. Due to your participation in the beta testing program, you can ensure the compatibility of your project with upcoming releases of Microsoft Office, Visual Studio or Windows, as well as suggest that we add some special features for your projects.

The Premium subscription includes:

• Developer license - When your subscription expires, you can continue using the last version you obtained or are eligible to use.
• Software maintenance: 12 months of free updates - Whether it's a minor update with a couple of bug fixes and improvements or a large-scale update that adds support for the new Office version, you get all the updates for free.
• Technical support service: 12 months - Help with any questions regarding the functionality of the products, programming issues, explanations of error messages, deployment and debugging.
• Keeping up-to-date: 12 months of participation in beta programs - Normally, every major release is preceded by 2 or 3 betas. Due to your participation in the beta testing program, you can ensure the compatibility of your project with upcoming releases of Microsoft Office, Visual Studio or Windows, as well as suggest that we add some special features for your projects.
• Priority support service: 12 months - Support - assistance provided in several ways: public forums, e-mail, remote sessions and live chat for urgent issues.
• New features and bug-fixes at your request
• Escalation of your issues to core developers
• VDProj to WiX Converter included