It sounds like you're planning to upgrade to macOS Catalina and are concerned about the compatibility of the Soundtower Tetra Editor in 64-bit mode. While About My Mac reports that the Tetra LE editor may not be 64-bit compatible, it's worth reaching out to Soundtower directly to confirm compatibility or inquire about updates. Regarding the iOS editors being pulled from the
Android App Store, unfortunately, I don't have specific information on future availability. However, it's common for developers to update their apps to ensure compatibility with new operating systems, so keeping an eye on updates or reaching out to the developers could provide more clarity.
Regarding your experience with the Mopho iOS editor, it's interesting that it somewhat works with the Tetra but encounters issues with program changes. It might be worth exploring further or reaching out to the developer for assistance or potential workarounds.
As for the Lemur Editor, encountering limitations with menu items and needing to chase knob settings on program change can be frustrating. You could try reaching out to the Lemur community or support for guidance on overcoming these limitations or optimizing your setup.
Ultimately, for portability and workflow preferences, using a standalone editor on your iPhone, iPad, or Mac and saving programs in sysex format seems like a convenient approach. Exploring different editors and configurations to find what works best for your setup and needs is key.