This link will deliver an upgrade from MacStitch Premium versions 2016 through 2019, to the latest version.
It can not be used to 'upgrade' from the demo version or from any other software.
Note that you will require a new download link and serial number.
This will be emailed to you within 24 hours once your eligibility for the upgrade has been verified.
(If you are not sure you already own an upgradeable product, please do not purchase, but instead contact Ursa Software to check.)
Ursa Software operate on UK business hours.
Sold by : Ursa Software