Judging from the word usage of my not-so-techie friends, an "app" is a "program on a smartphone". A "program on the desktop/laptop" is just a "program", not an

Judging from the word usage of my not-so-techie friends, an "app" is a "program on a smartphone". A "program on the desktop/laptop" is just a "program", not an "app". When someone says "i have an app, which does X", she surely is talking about her mobile.