A horrendously bad idea, just as the use of statistics, sterotyping, profiling, etc, etc are guaranteed to produce injustice when applied to individuals, so will this.  Just look how often this "civil comment" thing messes up; extremely sophisticated climate modals are useless to predict daily wx, etc, etc, etc.  

And yeah, I get that the recommendation is that such an 'app' should be used as *1 component* for evaluating risk - but who is so naive as to believe that overburdened public functionaries won't fall back on the "magic" of a "tech" endorsement to make their personal opinion/prejudice credible? - just like the Troopers already do with the psuedo-scientific device known as a 'polygraph' [substitution for factual investigations, evidence, judge, jury, and defense att - all under the complete and absolute control of 1 LEO, essentially - what's not to like??]