VoiceTra(Voice Translator)

8.86K reviews
Content rating
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About this app

VoiceTra is a speech translation app that translates your speech into different languages.
VoiceTra supports 31 languages and can be downloaded and used for free. With an easy-to-use interface, you can also check if the translation results are correct.
VoiceTra, whether to enhance your travel experience or to welcome visitors to Japan, will definitely come in handy as your personal speech translator.

VoiceTra utilizes high-precision speech recognition, translation, and speech synthesis technologies developed by the National Institute of Information and Communications Technology (NICT). It translates your spoken words into different languages and outputs the results in a synthesized voice.
The translation direction can be instantly switched, allowing 2 people that speak different languages to communicate using a single device.
Text input is available for languages that do not support speech input.

VoiceTra is best suited for travel-related conversations and is recommended for situations and places such as below:
・Transportation: Bus, train, rent-a-car, taxi, airport, transit
・Shopping: Restaurant, shopping, payment
・Hotel: Check-in, check out, cancellation
・Sightseeing: Overseas travel, serving and supporting foreign customers
*VoiceTra has also been introduced as a disaster-prevention, disaster-related app.

While VoiceTra can be used as a dictionary to look up words, it is recommended to input sentences as it interprets the meaning from the context to output the translation results.

■Supported languages:
Japanese, English, Chinese (simplified), Chinese (traditional), Korean, Thai, French, Indonesian, Vietnamese, Spanish, Myanmar, Arabic, Italian, Ukrainian, Urdu, Dutch, Khmer, Sinhala, Danish, German, Turkish, Nepali, Hungarian, Hindi, Filipino, Polish, Portuguese, Brazilian Portuguese, Malay, Mongolian, Lao, and Russian

■Restrictions, etc.:
Internet connection is required.
It may take a while to display the translation results depending on the network connectivity.
Languages available for text input are those that the OS keyboard supports.
The characters may not be displayed properly if the appropriate font is not installed on your device.

Please note that some of the functions or the application itself may be disabled when the server is down.

Users are responsible for the communication fees incurred to use the application. Please be aware that international data roaming charges can be expensive.

This application was developed for research purposes; targeting individuals to test it out when traveling, and uses servers that are also setup for research purposes. The data recorded on the server will be utilized to make improvements in speech translation technologies.

You may test out the app for businesses, etc., but please consider using private services that we have licensed our technology to for continuous use.

Please refer to our "Terms of Use" for further details → https://voicetra.nict.go.jp/en/attention.html
Updated on
Jun 18, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Audio and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

8.62K reviews
A Google user
June 29, 2019
Am impressed with the results, especially for short & clear sentences. I've done a quick comparison for several language pairs (English to & from Japanese, Spanish, French and Dutch) with Google Translate and found VoiceTra to be more accurate across the board and generally easier to understand. Too bad speech input is not (yet?) available for all the languages listed. I assume, and hope, that's because it's still a work in progress…
389 people found this review helpful
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Josh Kong
September 29, 2023
Protect this app at all cost. The best voice translation app so far, fast, efficient and accurate.
37 people found this review helpful
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Wayne Coltrane
November 27, 2023
The translation speaks too fast to understand, and there is no transliteration.
3 people found this review helpful
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What's new

・ Fixed an issue where the app would crash during speech input
・ Fixed an issue where the app would crash during speech output