Ok to buy new, but don't upgrade – Memory-Map Review

I have owned Memory-Map apps for several years. I reviewed Memory-Map last year and rated it as 5-stars. On a trip to Patagonia last month, it performed flawlessly, It is still my best off-road navigation app, even though Apple bureaucracy has un-necessarily rendered its best features (including on-line purchases) inoperative with this "upgrade". Go ahead and buy it if you haven't yet purchased it. You will likely not miss what Apple has disabled. If you already own it, I recommend you not upgrade until Apple sorts out some of its issues with this app.
Review by not hydrox on Memory-Map.