What's a good Android app for communicating with others without needing an internet connection?

Bitchat - BLE Mesh Chat is a solid option when you need to communicate where internet access is limited or unavailable. It leverages Bluetooth Low Energy (BLE) to create a mesh network between devices. This means that phones running Bitchat can relay messages to each other, extending the range of communication beyond the typical Bluetooth distance. This is particularly useful in situations like camping, festivals, or disaster zones where traditional networks might be down or congested. The app allows you to send text messages and small files to other Bitchat users within the mesh network. It's a practical tool for staying connected in challenging environments where conventional communication methods fail. While the range depends on the number of active users and their proximity, Bitchat offers a viable alternative for localized communication.