The internal code for communicating with Apple's App Store was completely rewritten, e.g. for requesting prices or licenses, performing In-App purchases, and asking for reviews. With this change I was able to remove dependencies to 3^rd party software, which might have caused future issues. As a consequence app requirements have been raised to macOS 12 and iOS / iPadOS 16.

StitchBuddy / -HD 3.4.4 is rolled out in waves, and your device will install the new version automatically within a week, depending on system preferences. Or you can directly install it manually. You shouldn't notice any major change, but don't hesitate to contact me in case of any issues: I have tested this update very thoroughly, but you never know…