Published by NICT on Aug 6, 2024

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About VoiceTra(Voice Translator)

1. VoiceTra utilizes high-precision speech recognition, translation, and speech synthesis technologies developed by the National Institute of Information and Communications Technology (NICT).

2. VoiceTra is a speech translation app that translates your speech into different languages.

3. 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.

4. The translation direction can be instantly switched, allowing 2 people that speak different languages to communicate using a single device.

5. Text input is available for languages that do not support speech input. *VoiceTra has also been introduced as a disaster-prevention, disaster-related app.

6. The data recorded on the server will be utilized to make improvements in speech translation technologies.

7. VoiceTra, whether to enhance your travel experience or to welcome visitors to Japan, will definitely come in handy as your personal speech translator.

8. It translates your spoken words into different languages and outputs the results in a synthesized voice.

9. Languages available for text input are those that the OS keyboard supports.

10. 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.

11. It may take a while to display the translation results depending on the network connectivity.

VoiceTra(Voice Translator) Customer Insights

1. Thank You for this App.good translation, no ads, big fonts and the app keep listening till you press stop so, unlike those apps that automatically stop listening if they don't sense anything within a few seconds, it's suitable for translations with long pauses between one sentence and the next.Was great initially but the app won't connect to my network anymore and hence useless.

2. In case other language to Japanese translation .. displaying furigana and romanji along with result will make it more useful for non Japanese users ThanksThis works nicely except for one thing.

3. 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.

4. Hope to see improvement of accuracy of the translation between Chinese and Burmese!When translated, it's more accurate than other translation apps.

5. Sad.Very happy that this app supports voice input and output of Burmese and is able to translate from and to Burmese! And it's done without Google voice input.

6. To switch input language one must redo the selection of languages process.

7. Too bad speech input is not (yet?) available for all the languages listed.

8. I assume, and hope, that's because it's still a work in progress…I love this App make me understand so many languages and It s fun.

9. Worked great for voice translationReally good app.

10. Not sure about long term use or glitches.Hi .. i am learning Japanese (beginner) and this application is very very useful.

11. If speech output settings have voice speed options , this app would be better.

Steps to Troubleshoot & Fix VoiceTra(Voice Translator) Issues

1. Fix VoiceTra(Voice Translator) Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart VoiceTra(Voice Translator): Restarting the app will resolve most errors.
  2. Update the VoiceTra(Voice Translator) App. Here is how:
    1. On Android goto PlayStore » Search for "VoiceTra(Voice Translator)" » Open VoiceTra(Voice Translator) » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for VoiceTra(Voice Translator) » click "UPDATE".
  3. Clear VoiceTra(Voice Translator) app cache: Clearing cached data will force your app to retrieve the latest data directly from VoiceTra(Voice Translator) servers.
    1. On Android, goto Settings » Apps » Select "VoiceTra(Voice Translator)" » click Storage » click "Clear Cache".
  4. Check VoiceTra(Voice Translator) app permissions. If any of these permissions required to use your device's features are disenabled, VoiceTra(Voice Translator) might not work.
  5. Uninstall and reinstall VoiceTra(Voice Translator). If nothing else has worked, completely uninstall VoiceTra(Voice Translator) then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing VoiceTra(Voice Translator) not working


2. Fix VoiceTra(Voice Translator) Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make VoiceTra(Voice Translator) be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to VoiceTra(Voice Translator) not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, VoiceTra(Voice Translator) may not be able to connect to the Internet when running in the background.

Reported Issues