Japan phone-call translator
Call any number in Japan. Speak English. They hear fluent Japanese.
A real-time, two-way phone-call translator built for the gap between Google Translate and an interpreter. Make the call yourself, in your own voice, with the other side hearing you in natural Japanese — and replying in Japanese you understand instantly in English.
iPhone · iOS 16+ · International dialing included
Live demo · real translated audio
Hear the call you'll make.
Pick the language you speak. Press play. The other side always hears Japanese.
Tap "Play with sound" to start
Two-way, both sides
Not a one-way speak-and-translate tool. Both you and the other party hear the call in your own language, in real time.
Built for phone calls
Optimized for phone-line audio quality — narrowband, intermittent silence, real-world noise. Not a Zoom plugin.
Natural voices
High-quality Japanese voices the other side won't flag as a robot. Polite, neutral, age-appropriate.
When you'd reach for it
- Restaurants & izakayas. The Japanese restaurants worth flying for are phone-booking-only. Tabelog lists the number; English isn't on the other end of it. Restaurant calls →
- Hotels & ryokans. Late arrivals, dietary requests, room preferences. Email is too slow when the Shinkansen schedule has changed. Hotel calls →
- Hospitals & clinics. Booking, insurance questions, follow-up appointments. The reception line is Japanese-only at most clinics outside the international wards.
- Lost & found, customer service. JR rail offices, taxi companies, airline domestic lines, post-office redelivery. All run on phones.
- Calling family members. A grandparent who doesn't speak English; a partner's parents you're meeting for the first time. Lower-stakes, but the calls people procrastinate the most.
How it works
- 1
Open the app and dial the number
Type or paste any Japanese phone number — restaurants, hotels, hospitals, government lines. International calling is built in; you don't need a SIM that supports Japan.
- 2
Speak your language, the other side hears Japanese
Native Call sits between the two phones. Your English (or Mandarin or Cantonese) is converted to natural-sounding Japanese in under a second, and their Japanese comes back to you in your own language the same way.
- 3
Hang up with what you needed
Reservation booked. Room request confirmed. Question answered. The full bilingual transcript stays in the app so you can re-read what was agreed.
Common questions
Is this a translation app or a phone app? +
Both. Native Call places a real phone call from inside the app to any Japanese phone number. The audio passes through a translation layer that converts each side's speech in real time. You speak English into your phone; they hear Japanese on theirs; their reply comes back to you in English. There's no separate "interpreter" anywhere on the line — it's all you and the other person.
Does it work both ways — them speaking Japanese to me? +
Yes. Both directions are translated in parallel. You hear the other side in English about a second after they speak.
Which Japan numbers does it handle? +
Any Japanese phone number — landlines (03-, 06-, regional area codes), mobile (070, 080, 090), IP phones (050), and toll-free prefixes. The same outbound stack used by professional VoIP services.
Will the translation pick up Japanese honorifics correctly? +
Yes — keigo (polite Japanese) is preserved in both directions. When you say something casual in English to a hotel front desk, the Japanese they hear is appropriately polite. When the okami uses keigo back to you, you hear it in normal English without losing the politeness signal.
What's the latency really like? +
Glass-to-glass is around one second on a normal connection. The pace feels like a phone call with a slightly thoughtful person on the other side — not a Zoom call with a bad mic.
What's the pricing? +
Free minutes when you create an account so you can test a real call before deciding. After that, calling is paid per minute or via a monthly plan inside the app.
Does it work outside Japan? +
The Japan-specific positioning is because phone-only Japanese businesses are the highest-friction case for English speakers. The same app works for Mandarin, Cantonese, and any other supported language; we just lead with Japan.
Make the call you've been avoiding.
Free minutes on signup. iPhone, iOS 16+.