Forget invite-only social apps, Lapse is testing a new technique to acquire its users: it forces you to invite your friends in order to get in. The

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Photo-sharing app Lapse hits top of the App Store by forcing you to invite your friends in order to get in. The app offers a similar experience to other mobile apps that attempted to recreate the disposable camera experience, like Dispo and Later Cam. Some say its new success has been achieved by ill-gotten means.