You may use the desktop version of the software on ONE computer only. If you want to use the software on more computers, you have the following options:
Additional license
For the Commercial and Personal Editions you can buy ONE additional license for a second computer. This additional license may be purchased with your order or afterwards. The deciding factor is that the main and additional licenses are used by the SAME user. furthermore, the version numbers must be identical. If the version number that you need for the additional license is no longer sold, you must update your main license.
Free Edition
You can install the Free Edition of VivaDesigner on additional computers. The Free Edition has no licensing limits. However the Free Edition has no hyphenation/spell check and no PDF Export.
Web Edition
The VivaDesigner Web Edition is of course also an excellent solution, particularly if you have several additional computers that are also used by different users. The VivaDesigner Web Edition can be used on a monthly rental basis.