Rock solid!
This app is absolutely rock solid! I’ve been using it to communicate with a friend in separate rooms (separated by one wall and about 5 m apart) with both devices on the same LAN, and messages are sent and received by the other party almost instantly. The app even queues up voice messages if you’re still listening to one while more are coming in! I also received confirmation from the developer that the app does in fact encrypt all communications through the encryption supplied by Apple’s Multipeer Connectivity framework. Thanks for developing this app!