RTranslator is an (almost) open-source, free, and offline real-time translation app for Android. The app uses OpenAI's Whisper for speech recognition and Meta's NLLB for translation, it has 3 modes: A classic text translation mode. Conversation mode: Where you connect to one or more devices that have RTranslator to have a real-time translated conversation with other people (works best with Bluetooth headphones). WalkieTalkie: Where you can translate a conversation with a single device.