Uptime for iOS this past Monday, but rather than being stuck within Apple's ecosystem, Supersonic Fun Voice Messenger is available for both Android and iOS.Supersonic Fun Voice Messenger was created by the same Google-backed team that launched
You might be rolling your eyes at first due to the fact that Google is behind another messaging app, but this one is a bit different. You can have either one-on-one conversations or create group chats like you would in any other messenger, but in order to communicate within Supersonic Fun Voice Messenger, you'll need to hold down the microphone icon towards the bottom of the app and speak your message (hint the Voice Messenger part of the app's name).
These messages are automatically removed once the recipient of it plays back the audio, but they are also transcribed so that they can be read without disturbing others around you. The interesting part here is that messages are transcribed using a combination of both text and emoji. It's definitely not the most practical way of talking to one another, but with the intent of being light-hearted and fun, Google and Area 120 nail this on the head.