VoiceTra(Voice Translator) Downloads & RevenueVoiceTra(Voice Translator) · Google Play
VoiceTra(Voice Translator) gets 500+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
VoiceTra(Voice Translator) is #51 in Travel & Local Free on Google Play in Japan and charting in 3 of 23 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperNICT
CategoryTravel & Local
PriceFree
Released
Installs5M+
Rating★ 4.3 (11k)
Updated
Content ratingEveryone
VoiceTra(Voice Translator) update history & changes
Last change · 8 events since 22 Apr 2011Full timeline ↓📦Updated to version 9.2.2📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider📦Version 9.2.1🆕Released on Google Play
Full timeline · 8 events
- 📦VoiceTra(Voice Translator) updated to version 9.2.2We have optimized the app's location access permissions to enhance
user privacy. - 📈VoiceTra(Voice Translator) entered the top 100Top Free · Travel & Local · TH
- 📈VoiceTra(Voice Translator) charting in a new countryThailand
- 📈VoiceTra(Voice Translator) entered the top 100Top Free · Travel & Local · TW
- 📈VoiceTra(Voice Translator) charting in a new countryTaiwan
- 🆕VoiceTra(Voice Translator) first spotted by AppInsiderJapan
- 📦VoiceTra(Voice Translator) version 9.2.1Fixed security issues.
- 🆕VoiceTra(Voice Translator) released on Google Play
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.3 ★
11k ratings
Measured
Best rank now
#51
Travel & Local FreeMeasured
New ratings a week
7
▲ +14% vs the 2 weeks before
Measured
VoiceTra(Voice Translator) on Google Play
App details
App ID
jp.go.nict.voicetra
Publisher
NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
Publisher country
Japan
Content rating
Everyone
VoiceTra(Voice Translator) downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where VoiceTra(Voice Translator)'s downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | Travel & LocalFree | #51 |
 Taiwan | Travel & LocalFree | #34 |
 Thailand | Travel & LocalFree | #42 |
Apps near VoiceTra(Voice Translator) on the chart
Travel & Local Free, around #51.
Ratings
Google Play, worldwide.
Rating
4.3 ★
11k ratings
Measured
Ratings
11k
Measured
Written reviews
175
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
7
▲ +14% vs the 2 weeks before
Written reviews a week
under 1
Google Play
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
36/100
faster than 22% of Travel and local apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About VoiceTra(Voice Translator)
VoiceTra is a speech translation app that translates your speech into different languages.
VoiceTra supports 33 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.
■Features:
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, Tamil, Danish, German, Turkish, Nepali, Hungarian, Hindi, Filipino, Bengali, 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.h
VoiceTra supports 33 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.
■Features:
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, Tamil, Danish, German, Turkish, Nepali, Hungarian, Hindi, Filipino, Bengali, 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.h
What's new in 9.2.2
We have optimized the app's location access permissions to enhance
user privacy.
user privacy.