Researchers say young are vulnerable and have called for app stores to explore ways of regulating content.
Health professionals and anti-smoking groups have condemned smartphone apps which promote cigarettes to youths, with some claiming them to be attempts to subvert strict advertising bans.
Researchers have identified 107 pro-smoking apps - some using cartoons or images of cigarette brands - which they say violate the ban on advertising and promotion of tobacco products.
The apps are available to New Zealanders via the Apple App Store and the Android Market.
The researchers, led by Nasser BinDihm of Sydney Medical School's school of public health, searched the online stores in February for pro-smoking apps and found 42 on the Android Market had been used more than 11 million times, while 65 apps were available on the Apple App Store. The research, published in the Tobacco Control medical journal, showed most popular apps were for smoking simulation.