"App" doesn't imply smartphones. It has been used this way since at least the 80s: https://www.google.com/search?tbo=p&tbm=bks&q=%22killer+app%22&tbs=,cdr:1,cd

"App" doesn't imply smartphones. It has been used this way since at least the 80s: https://www.google.com/search?tbo=p&tbm=bks&q=%22killer+app%22&tbs=,cdr:1,cd_max:Dec+31_2+1990&num=10 https://www.google.com/search?tbo=p&tbm=bks&q=%22kil...