WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.
App.net is a new mobile app distribution and monetization platform for iOS and Android. App.net is built by an experienced team of mobile app developers who built a product to solve their own needs.
App.net helps developers optimize their products' online presence and provides them tools to manage, monitor and promote their app with greater efficiency. Using App.net, developers can create state-of-the-art landing pages and customizable download widgets. App.net makes is easy to track interactions and other actionable performance data.
"PrivacyGrade.org : Grading The Privacy Of Smartphone Apps
We're a team of researchers from Carnegie Mellon University. We have assigned privacy grades to Android apps based on some techniques we have developed to analyze to their privacy-related behaviors. Learn more here or browse our analyzed apps."
Zendo makes mobile messaging conversations as private and natural as conversations with your friends "in real life." You exchange Zendo keys in person with your friends. That way, nobody else ever has the keys, so nobody else can read your messages.
Zendo is a mobile messaging app that ensures private communications between users (text messages and photos for now, with more formats on the way). You exchange encryption keys in person, so it is like a digital handshake - an exchange of trust and friendship.