Updated 2026-09-24
Press Start, play it, and the subtitles appear as it is spoken — original, translated or both. To understand Japanese as it is spoken — a raw anime episode, a VTuber stream, a Tokyo supplier on Zoom, a phone call to a hotel in Kyoto — run Tingdong on your Mac. It listens to whatever is playing, recognizes Japanese automatically, and floats English subtitles over it at simultaneous-interpretation pace. Switch to Call Translation and the other direction works too: you speak English, they hear Japanese (Website version).
Pick “Screen sound” so it hears exactly what the video or meeting plays. You do not pick Japanese — it is detected.
Subtitles float over the player or the Zoom window: Japanese line on top, English below, updating while the sentence is still being spoken.
Choose Tingdong Microphone (Website version) in the app’s mic menu, or hand an iPhone call to the Mac over Bluetooth. Your English reaches them as a Japanese voice; their Japanese comes back as English subtitles.
Japanese drops subjects, ends sentences with the verb, and carries meaning in particles and register — so line-by-line subtitle translators, which never see the previous sentence, produce the flat, wrong captions you have seen on auto-translated YouTube. Tingdong translates a continuous stream of speech and keeps context across sentences, which is what makes the output readable on a long meeting or a 25-minute episode. Mixed speech is handled too: an English loanword, a Chinese name, a guest switching to Korean mid-stream — the language is detected per phrase, not set once.
Yes. It captures the audio your Mac plays, so any player or site works — Crunchyroll, Netflix, YouTube, Twitch, niconico, local files in VLC or IINA — and live streams with no subtitle track at all.
Yes. Hand the iPhone call to your Mac over Bluetooth and Tingdong interprets both ways: they hear your words as a Japanese voice alongside your own (Website version), you read their replies as English subtitles. They install nothing.
Meeting and dialogue speech translates well; the engine keeps context across sentences. Fast comedy, songs and heavy dialect are hard for any machine translation — the original Japanese line stays on screen above the translation so you can always check.
No. Tingdong auto-detects Japanese among 60+ input languages, per phrase, so a meeting that moves between Japanese and English just works.
Download free for macOS Get it for Windows
Free trial: about 100 minutes of subtitles · No signup or card
Windows 11 (subtitles and Read aloud only, nothing sent into calls)