Chat app with a twist
WhatsApp-like but with lot more features! This IM application was developed for both iOS and Android platforms. XMPP is the messaging protocol and Riak, the database.
The app uses a custom Erlang server with modules for message exchange, phone number based registration, multi-user chat (searchable with tags and topics), offline message storing, and sharing of images, videos, or audio files. Communication is based on customized XMPP with encryption for low mobile data usage and high message deliverability, among other improvements.