Languages / Korean
Offline Korean voice translator.
No internet. No subscription.
Speak your language — your phone speaks Korean (한국어), in your own voice.
~80 million speakers · spoken across South Korea and communities worldwide
Korean's alphabet is learnable in a weekend but its speech levels and grammar are not. Rasterdeck Translator handles natural spoken Korean — including the speed at which it's actually spoken — without shipping your conversations to a cloud in another country.
On the road
From Seoul street food to a jjimjilbang in Busan, with your phone in airplane mode.
Good to know
Spoken Korean output uses the Pro upgrade's premium voices — the standard tier translates Korean speech and shows text, but doesn't yet speak it aloud.
How Korean translation works on-device
1
You speak
The app transcribes your speech locally — the audio never leaves your phone's memory.
2
It translates
An on-device neural model translates to Korean (or from Korean to your language) with no server round-trip.
3
It speaks Korean
Your phone speaks the translation aloud — in a clone of the speaker's own voice. The conversation still sounds like the people having it.