Voxer is a walkie talkie-style mobile communication app, allowing users to communicate in real-time with voice, text, and photo messages. It can be used for both one-on-one conversations or group chats. Voxer also allows users to create their own custom audio channels and share images, videos, and other files. The app also provides notifications when a user's message has been delivered, heard, and read. It is free to use for individual users, and there are also subscription-based plans for business users.
Telegram is a text chat application, it does not allow walkie-talkie type audio messages.