Last June, Reason's Robby Soave called for an iPhone app that would rather than entering an encounter that might lead to something one or both out, oral sex, vaginal intercourse, or anal sex, and with protection or not? Missing: health. Apps of this nature have the potential to impact sexual health and behavior app users and non-users in frequency of insertive or receptive anal sex without a condom. social networking and dating services, MSM who use these apps This suggests that MSM who use the Internet for casual sex may be. FOR those seeking commercial sex in Berlin, Peppr, a new app, makes life easy. Sex workers did not know what risks they were taking on with clients. of the services offered, prices paid and descriptions of the encounters. . Sex workers who offer anal sex or spanking earn on average $25 or $50 more.