What your onboarding flow needs is "How this is different from X." Adding this to my app may be easy, but switching has cost (lost data, time spent, etc).

X includes at least: Honeybadger (what I use presently), AirBrake (just switched from this), NewRelic (also does what you do, and everybody uses it), BugSense, Errormator, Sentry, and I'm sure there are others in this field (for some reason).