Hearvia

Hearvia

Live translated subtitles for anything you hear, on iPhone and Mac.

Hearvia listens to other apps or the microphone and shows subtitles on top of whatever you're doing: videos, podcasts, calls, or the person in front of you.

Join the beta on TestFlight View on GitHub

Free public beta for iPhone and Mac. Needs iOS 27 or macOS 26.4. Version 1.0 is in App Store review.

Listening · English → 中文

Tonight we're looking at how small changes in daily routines can improve sleep.

今晚，我们将探讨日常习惯中的小改变如何改善睡眠。

Features

Subtitles wherever you listen

On your Mac, your iPhone, or an iPhone Duo standing on the table. What you're watching keeps playing.

Mac

Subtitles over any app

An overlay follows all system audio or just one app. Start and stop from the menu bar or the Dock.

A Mac playing a video, with a subtitle overlay at the bottom: the Japanese original in small grey text and the English translation in white below it.

iPhone

A floating window

Subtitles float over videos, podcasts and calls. Hearvia doesn't play sound or pause anything.

An iPhone home screen with a floating subtitle window showing a Japanese sentence and its English translation.

Conversations

Big captions for the room

Turn your iPhone sideways and the subtitles fill the screen, easy to read across a table.

An iPhone in landscape filled with large white English subtitles under the Japanese original.

Translators

Free on device, or your own AI

  • On-device. Free, private, and works offline once the languages are downloaded.
  • OpenAI Realtime and Gemini Live. The lowest lag, with your own API key.
  • Local model. Experimental: a model you run yourself with Ollama, LM Studio or another OpenAI-compatible server.
The iPhone translator picker listing On-device, OpenAI Realtime, Gemini Live and Local LLM.

iPhone Duo

Two pages, two jobs

Subtitles on one page and the transcript on the other. Half-fold it and stand it up for the room.

An unfolded iPhone Duo with live subtitles on the left page and the running transcript on the right page.

Transcripts

Every session, saved

Read, copy or export any transcript later. They stay on your device, or sync through your own iCloud if you turn it on.

The Mac transcript window: a list of past sessions on the left and one transcript with original and translated lines on the right.

In your language

  • English
  • 简体中文
  • 繁體中文
  • 日本語
  • 한국어

Hearvia itself speaks all five, and subtitles can be in Traditional Chinese too.

Never in the way

Hearvia never plays sound or pauses what you're watching. It only listens while you've started it.

Quick start

On iPhone, start listening from a widget, Control Center, Shortcuts or the app icon.

Privacy

Private by default

  • No accounts
  • No analytics
  • No tracking

The on-device translator keeps everything on your iPhone or Mac. Audio goes to OpenAI or Google only if you pick their translator and add your own key. Transcripts stay on your device, or in your own iCloud if you turn on sync.

Read the privacy policy

Try the beta

Free on TestFlight for iPhone and Mac. Needs iOS 27 or macOS 26.4.

Join the beta on TestFlight Send feedback