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Apps with 'Hidden chat' feature
Viber is a mobile application that lets you make free phone calls and send text messages to anyone who also has the application installed. ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. Mood is a text messaging app for your SMS & MMS that is different from your stock Android SMS app. Simple, beautiful and effective, it replaces your default SMS application to bring you unique features and contents.