Talkie is an Android application developed by IBR TU Braunschweig that allows users to communicate with others through voice messages. This app is similar to a walkie-talkie, where every voice message sent is broadcasted to other devices located nearby. Talkie also offers the possibility to send voice messages directly to a single contact when used in combination with the Whisper application.

It is important to note that Talkie depends on the IBR-DTN services, which must be installed beforehand. Without this, the app will not work due to missing permissions. Despite this requirement, Talkie is a great tool for those who want to communicate with others easily and quickly through voice messages. The app is free to use and is categorized under Social & Communication in the Google Play Store.