Naan Studio has released a major update to its popular Twitter client, Echofon adding native iPad support to the free version as well as several other new features for both the free and paid versions. Echofon 4.0 is now a universal application supporting the iPhone, iPod touch and iPad; previously only Echofon Pro offered native iPad support. Version 4.0 on the iPad also introduces support for Twitter’s real-time user streams providing instantaneous updates of new tweets without having to rely on a refresh cycle. A new mute feature allows users to filter out specific users, clients or hashtags from their Twitter stream and global push notifications have now been made available to users of the free version. In addition, Push Notifications have been expanded to include not only mentions, replies and direct messages but now also include new followings, favorites and native Twitter retweets. Account settings for features such as mute filters and push notifications can also now be synchronized automatically across multiple iOS devices. Echofon is available from the App Store in two versions: Echofon (free) and Echofon Pro ($5). The free version is ad-supported but as of version 4.0 otherwise includes the same features of Echofon Pro.