# VoiceTra — Voice Translator

> Speech translation app supporting 33 languages with voice and text input. (iPhone/iPad app by NICT.)

- Source: https://appshunter.io/ios/app/voicetra/id581137577 (this page in markdown: same URL + `.md`)
- Developer: [NICT](https://appshunter.io/developer/383542158)
- Category: Travel, Utilities
- Price: Free
- Rating: 4.50/5 from 200 App Store ratings · 179 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 69 MB
- Languages: Indonesian, Japanese, French (France), Thai, Chinese (Simplified, China), Chinese (Traditional, Taiwan), American English, European Spanish, Vietnamese, Korean
- Released: 2012-12-17
- Data updated: 2026-08-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/voicetra/id581137577/reviews.md

## What is VoiceTra?

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.html

## Key features

- Speech-to-speech translation
- Supports 33 languages
- Text input option
- Instant translation direction switch
- High-precision speech recognition
- User-friendly interface

## Recent user reviews (10 of 179)

All indexed reviews: https://appshunter.io/ios/app/voicetra/id581137577/reviews.md

### 4/5 — 咋回事啊

*2026-08-03*

之前一直好用的，最近咋点不进去了！！！

### 5/5 — 请更新升级

*2026-08-03*

用不了啦。

### 1/5 — App won’t work

*2026-07-31*

this is buns

### 4/5 — 3 languages

*2026-07-30*

The screen is divided into input results, translation results and meaning of translation results.
I frequently would like to be able to display 3 languages, e.g. Arabic, Chinese and English. Support of this use case would be very helpful.

### 5/5 — 好用的翻譯app

*2026-03-13, version 9.2.0*

翻譯的基本都準確，而且簡單明瞭

### 5/5 — 無料の上、再翻訳

*2026-03-12, version 9.2.0*

無料な上に翻訳した後にもう一度再翻訳してくれるので、意図した翻訳になっているか、確認出来るのがとても良い。

### 1/5 — マイクで話しても…

*2026-02-06, version 9.1.3*

元気ですか？　とマイクに話しても

元気元気元気元気で好きで好きですか？
と認識されてしまう。
猪木さんじゃないんだから…

### 5/5 — 翻訳した文章の再翻訳機能が神

*2026-01-27, version 9.1.3*

私は外国人の受け入れ関係で働いております。いつもお世話になりまくっています笑
このアプリはいかに正確に伝えるかに重点を置いた翻訳アプリだと思います。
日本人のための翻訳アプリといったらこれ！！とお勧めできる良いアプリです。

### 4/5 — 言語追加と音声対応の拡充の希望

*2026-01-24*

VoiceTra（ボイストラ）を日常的に利用していますが、UIがシンプルで動作も安定しており、実用を強く意識して設計されている翻訳アプリだと感じています。 特に、翻訳結果を再翻訳できる機能は、翻訳精度の確認や文脈のズレを自分で検証できる点が非常に優れており、他の翻訳アプリにはあまり見られない、実務・学習の両方に有効な機能だと思います。 実際に複数言語を切り替えながら使用する中で、今後の拡張として以下の言語が追加されると、対応範囲がさらに広がり、利用価値が一段と高まると感じました。 ベンガル語、ペルシャ語、ヘブライ語、フィンランド語、スウェーデン語、ノルウェー語、ギリシャ語、スワヒリ語 また、現在は音声機能が一部言語に限定されているようですが、 全対応言語で音声出力が可能になると、翻訳結果の自然さ確認や実際の会話利用において、より完成度の高い体験になると感じています。 加えて、音声再生を途中で停止できる制御があると、利用環境（公共の場・学習中など）に応じた柔軟な運用ができ、UX向上につながると思います。 さらに、**写真翻訳（画像・カメラ入力からの文字認識と翻訳）**が追加されれば、 看板・書類・印刷物など「テキスト入力が難しい場面」でも即座に活用でき、 VoiceTraの実用性が大きく広がるのではないでしょうか。 追記として、 国・言語一覧について、あいうえお順（アルファベット順）での並び替えが可能になると、 対応言語数が増えた際にも目的の言語を素早く選択でき、操作効率がさらに向上すると感じました。 翻訳精度だけでなく、実利用を強く意識した改善が続けられている点に感謝しています。 今後のアップデートも楽しみにしています。

### 5/5 — 建議新增一功能

*2026-01-18, version 9.1.3*

如能加入一鍵刪除所有歷史記錄的功能，那就太完美了

## Frequently asked questions about VoiceTra

### What does VoiceTra do?

VoiceTra is a speech translation app that translates your spoken words into different languages. It utilizes high-precision speech recognition, translation, and speech synthesis technologies to provide translations, which are then output in a synthesized voice. The app also supports text input for languages that do not have speech input available.

### What are the key features of VoiceTra?

Key features include support for 33 languages, the ability to switch translation directions instantly for two-way communication on a single device, and text input for unsupported speech languages. It also boasts high-precision speech recognition and a user-friendly interface for checking translation accuracy.

### Is VoiceTra free to use?

Yes, VoiceTra can be downloaded and used for free. Users are responsible for any communication fees incurred, such as international data roaming charges, as an internet connection is required to use the application.

### What languages does VoiceTra support?

VoiceTra supports a wide range of 33 languages, including Japanese, English, Chinese (simplified and traditional), Korean, Thai, French, Spanish, German, Russian, and many others. A full list is available in the app's description.

### When is VoiceTra most useful?

VoiceTra is particularly useful for travel-related conversations, such as navigating transportation, shopping, checking into hotels, and sightseeing. It can also be helpful for welcoming visitors to Japan or in disaster-prevention scenarios.

## Version history (last 5 releases)

### 9.2.1 — 2026-08-10

Fixed security issues.

### 9.2.0 — 2026-02-24

・Tamil translation, speech recognition, and text-to-speech have been supported
・Bengali translation, speech recognition, and text-to-speech have been supported
・The display of language names has been updated
・Minor bug fixes

### 9.1.3 — 2025-04-21

・ Minor bug fixes

### 9.1.0 — 2024-12-17

・ Supported an option to display the Japanese translation results in romanized characters
・ Supported an option to configure the speed of the synthesized audio
・ Minor bug fixes
・ The supported OS versions are: iOS 16 or later

### 9.0.3 — 2023-12-07

・ Minor bug fixes

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*