# langTube - Learn languages — Speak Spanish, Korean, English

> AI-powered YouTube dual subtitle player for language learning and vocabulary practice. (iPhone/iPad app by Shingo Yamauchi.)

- Source: https://appshunter.io/ios/app/langtube-learn-languages/id1566812829 (this page in markdown: same URL + `.md`)
- Developer: [Shingo Yamauchi](https://appshunter.io/developer/783066892)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 4.38/5 from 8 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 143 MB
- Languages: English
- Released: 2023-03-17
- Data updated: 2026-06-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/langtube-learn-languages/id1566812829/reviews.md

## What is langTube?

Enhance your language skills with YouTube and AI.
A joyful language learning app is now available!

I've been studying a new language for a long time, but I'm still not good at listening.
I've never had a chance to actually speak and listen.

langTube has a useful dual subtitles player and AI assistant for YouTube.
AI finds difficult language, then creates flashcards and generates a YouTube video summary!

The method we propose is simple.

STEP1:
Learn authentic English from your favorite YouTubers, artists, and bloggers.
Learn real English used in your favorite videos.
Watch the video with subtitles and practice shadowing.

STEP2:
Learn the vocabulary and phrases you want to memorize.
Save the words and phrases you want to memorize as flashcards.

STEP3:
Practice the phrases and words on the flashcards.
Review what you have learned.

Repeat until you can naturally speak your favorite phrases.
By continuously learning with LangTube, you can significantly improve your language skills.

To learn to swim well, you need to get in the water and practice, not just take an online course.
The same is true for English conversation.
Practice by speaking out loud, rather than passively listening to an online course.

The most important thing is to create a habit of persistence.
LangTube makes this achievable.

List of features (some features are only available with Premium)
- Dual subtitle YouTube player
- Quick dictionary
- Save words as flashcards
- Download subtitles and translations as PDF files
- Import YouTube data
- Learning time notifications

Premium Membership
Enhance your learning experience with LangTube Premium.
Get unlimited features,
Save as many words and sentences as you like without ads.
We hope you enjoy the app with Premium.

Your langTube Premium subscription will be charged to your App Store account and will auto-renew 24 hours before your current subscription expires.
After purchase, auto-renewal can be canceled at any time in the App Store.
The current subscription fee for LangTube Premium is US$3.49 per month.
LangTube is available for free without a Premium subscription.

- Privacy Policy: https://langtube.app/#privacypolicy
- Terms and Conditions: https://langtube.app/#terms

## Key features

- Dual subtitle YouTube player
- AI video summaries
- Vocabulary flashcards
- Quick dictionary
- Downloadable subtitles
- Learning time notifications

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| langTube Premium | $3.49 | per month |
| プレミアム機能 | $34.99 | per year |
| プレミアム | $3.49 | per month |
| プレミアム | $34.99 | per year |
| 教育版 プレミアム | $3.49 | per month |


## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/langtube-learn-languages/id1566812829/reviews.md

### 1/5 — え？？笑笑

*2025-12-01, version 0.1.29*

エラーコード4と出てきて何も再生できない。Googleアカウントの情報抜くための詐欺アプリ？怖い

### 4/5 — オススメのアプリですが

*2025-11-29, version 0.1.29*

現在、動画の再生をしようとするとどんな動画でもエラーコード4が出て再生できません。字幕も、学習中を英語/ネイティブを日本語にしているのに英語しか表示されません…以前まで2言語表示されて使いやすかったので残念です。元に戻れば良アプリです。

### 3/5 — 【 動画の再生について 】

*2025-10-25, version 0.1.29*

動画の再生ができません。
エラーコード１５と表示されます。
修正をお願いしてもいいでしょうか。

### 5/5 — 素晴らしいと思う

*2025-09-01, version 0.1.29*

なぜこんなにも素晴らしいアプリが話題になっていないのか不思議に思う。欲を言えば、再度開いた際に前回視聴した場所まで進んでいなかったり、横画面との切り替えがスムーズじゃ無く、進行度合いが別カウントされていたり、 （字幕準拠で分数を進めているようで、横画面に切り替えの際に字幕が1から再生になってしまうのか？） するけれど、些細な問題です！となるくらい、私には最高で最適なアプリでした。 今後も継続して使わせて頂きたいのですが、どこに感謝していいのかわからずレビューとさせて頂きます。

2025/09/01追加
YouTube側の問題だと思いますが、音声が日本語翻訳自動音声に切り替わってしまうようでオリジナルの音声への切り替えができません。親元のアカウントから動画を引っ張ってきているのでしょうか？ちょっとわかりかねますが、この状態では利用目的に合わないので残念です。

### 2/5 — 無料では使えない

*2025-06-10, version 0.1.28*

初めはいいなと思ったのですが、動画に2言語表示させてみるには課金しないといけないみたいです

### 1/5 — サインインができない

*2025-03-31, version 0.1.28*

サインインができません

### 1/5 — 有料プランについて

*2025-03-16, version 0.1.28*

一カ月フリートのことでスタートしたが、課金されていた。返金申し込みも何故かAppleではできなかった。もはや詐欺。

### 4/5 — 素晴らしいアプリ

*2025-02-27, version 0.1.28*

最高のアプリ、free wifiだと再生できなくなるのが辛い。。。

### 5/5 — 開発してくれてありがとうございます。

*2024-07-11*

英語勉強のために、スマホで2言語表示してくれるツールがないか探していました。使いやすく大変助かります。開発してくれて本当にありがとうございます。

**Developer response:** langTubeを使って頂きありがとうございます！使いやすいアプリにするためにこれからも頑張って開発を続けていきます。
不具合や使い勝手が悪いところがありましたら、フィードバックよりお問い合わせください。

### 5/5 — Very promising

*2024-01-16*

I like the minimal design of the app, that you can use it for free even for basic features. The best way for me to watch youtube videos for language learning with dual subtitles… on iOS! But to be honest it’s still quite buggy and a lot can be done to improve user experience. So I really hope I can provide more direct feedback to Shin the developer and give my support. If the app improves enough, I will 100% suggest it to all my learning community. Forum seems dead no one replied to my questions :( Is there an email to reach you? Thanks !

**Developer response:** Thank you for using our app.
We solved many bugs and improve player usability after you sent message to us.
If you have any problems, please let us know via the forum and we will respond.
I would be really happy if you could use it!

## Frequently asked questions about langTube

### How does langTube help with language learning?

langTube uses YouTube videos with dual subtitles and an AI assistant to help you learn authentic language. You can create flashcards from new vocabulary and practice speaking to improve fluency.

### What are the premium features in langTube?

LangTube Premium offers unlimited features, allowing you to save as many words and sentences as you like without ads. This enhances the learning experience for dedicated users.

### How much does langTube Premium cost?

The current subscription fee for LangTube Premium is $3.49 per month, with options for annual subscriptions as well. Free trials are often available for premium tiers.

### Can I cancel my langTube Premium subscription?

Yes, you can cancel your auto-renewal at any time in the App Store settings after your purchase. Subscriptions will auto-renew 24 hours before they expire.

### Does langTube have ads?

Yes, langTube contains advertisements. Users can remove ads by subscribing to LangTube Premium.

### What devices is langTube available on?

langTube is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is langTube updated?

The latest version of langTube is 0.1.29, and it was last updated on June 22, 2025. This indicates regular updates to improve the app.

### What is the age rating for langTube?

langTube has an age rating of 4+, making it suitable for a wide range of users interested in language learning.

## Version history (last 5 releases)

### 0.1.29 — 2025-06-22

Bug fixes and performance improvements

### 0.1.28 — 2025-01-14

Bug fixes and performance improvements

### 0.1.27 — 2024-12-19

Bug fixes and performance improvements

### 0.1.26 — 2024-10-20

Bug fixes and performance improvements

### 0.1.25 — 2024-07-20

Bug fixes and performance improvements

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| [English Learning: Lingvoca](https://appshunter.io/ios/app/english-learning-lingvoca/id1664034863) | 4.8 (16) | Free | Education |
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## More apps by Shingo Yamauchi

- [のらねこ](https://appshunter.io/ios/app/id6764595648)

All apps by Shingo Yamauchi: https://appshunter.io/developer/783066892

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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 2026-06-11.*