1.9. Can I install PTGui on both my PC and my laptop computer?
A personal license may be installed on up to three computers, provided it is only used by the person to whom it is licensed (i.e. the name appearing in the registration key). If multiple users use PTGui on those computers, multiple personal licenses or a company license should be purchased instead.
For the company license registration keys are issued on a per machine basis: a separate registration key must be purchased for each computer on which the software is installed.
Other restrictions apply; see the End User License Agreement for details.
Interessant für Dich Punkt 1.10:
1.11. How can I remove a PTGui license from my computer, or how can I transfer my license to another computer?
To remove a PTGui license: start PTGui and go to Help -> About -> Register (on Windows) or PTGui -> About -> Register (on Mac). Then click on Deactivate. After this the registration key is removed and PTGui will close.
To transfer your license to another computer you can remove the license from the first computer as described above, then install the software on the new computer using the original registration key.
Ich habs auch auf dem Mac und dem Macbook installiert. Geht ohne Probleme.