# Heartongue > Live AI interpretation for churches and events: voice and captions in Vietnamese, Korean, Spanish and Chinese on listeners' own phones, no app to install. Heartongue is a web app for churches and small events: the speaker is heard through a laptop at the sound desk, and listeners scan a QR code to hear a translated voice and read captions on their phones. Source language: English. Target languages: Vietnamese, Korean, Spanish, Chinese. Priced per language-hour (one hour translated into one language with at least one listener): free trial of 2 hours, pay as you go $4 per language-hour, or monthly plans from $49. Accounts are for adults (18+); listeners need no account. ## Docs - [Guide](https://heartongue.com/guide.md): How Heartongue works: rooms, broadcasting, listening, roles, pricing, privacy and FAQ. - [Terms of Service](https://heartongue.com/terms.md): The agreement for using Heartongue. - [Privacy Policy](https://heartongue.com/privacy.md): What personal data Heartongue processes, who it is shared with, retention and your rights. ## Optional - [Everything in one file](https://heartongue.com/llms-full.txt): all of the above concatenated - [App](https://app.heartongue.com): sign up and run broadcasts