Murmur

One person speaks; everyone else follows translated captions live on their own phone, with spoken translation for stable phrases. Murmur is built for talks, sermons, tours, and family gatherings — the places where a two-way translator app is the wrong shape.

Under the hood it streams speech through Deepgram, translates through OpenRouter, and speaks through Cartesia, all coordinated by Cloudflare Workers. It ships on iOS and Android.