Here's a useful tool to check to see if your app is going to break on MacOS updates. I've personally worked with @decent_geek before, so I know he's put some good thought into it.
Views
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Views
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Loading velocity curve…
—Views / houraverage velocity since it published
—Peak velocitythe hottest sustained views/hr it ever hit
—vs. their normalpace relative to this creator's own baseline
—Engagementlikes per view — real engagement is hard to fake
—Agehow early Slope caught this surge