88 Macworld • December 2019FEATURE
have both direct sales and Mac App Store editions
of their apps, you can contact the company and
see if they can help.
The ultimate solution is to upgrade to a newer
version of macOS, if not the latest release. That’s
not always ideal depending on why you’ve held
back, but it’s definitely the case that you’ll have
more and more apps that can’t be upgraded over
time. That’s a process guaranteed to increase
later this year with the release of macOS Catalina
(version 10.15), which ditches the last vestiges
of backwards compatibility for older apps. Some
developers will also use the opportunity to shave
off that support within their apps, and make their
update and testing tasks more streamlined, too.Moving abroad? What you need to know
about your Apple ID and app purchases
If you find yourself moving from one country to
another, you will certainly bring some belongings
with you (unless you’re an ascetic). But what of
your digital goods? Items you’ve downloaded
are typically transportable, but those that you’ve
purchased and aren’t currently installed on a
device you own could lag behind.
Apple relies on a billing address for purchases
across all its product lines – App Store, iTunes
Store, and more – to decide in which country
you reside. If you start in one nation and move
to another, shifting your billing details along the
way, you could find yourself locked out from some
previous purchases.