SubVi vs langTube
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubVi
Enhance English language skills through interactive video learning. Features include subtitle translations, dictation exercises, speech recognition for pronunciation practice, and vocabulary building. Access content from your favorite YouTube channels with subtitles.
- Side-by-side subtitle translations
- Dictation exercises for listening comprehension
- Speech recognition for pronunciation practice
- Vocabulary building and exercises
- Video summaries for Ted and Ted-Ed
- Access YouTube videos with subtitles
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SubVi (Subtitle Video) project helps users learn English effectively with Dictation, Speech recognition, and Quizzes. Videos are sourced from subscribed YouTube channels. ## Features. - **Subtitle**: Watch YouTube videos with their subtitles and side-by-side translations. - **Quiz**: Test your understanding with short quizzes after watching a video (Only support Ted and Ted-Ed). - **Video Summary**: Read a summary of the video if you prefer not to watch it (Only support Ted and Ted-Ed). - **Dictation**: Listen to an English video clip and write down exactly what's being said. It's a highly effective way to improve English listening comprehension, as dictations force you to carefully consider every word and sound you hear. - **Speaking**: Practice speaking and pronunciation using speech recognition technology that converts your speech into text. After listening to an English video clip, repeat after the speaker, and the app will convert your speech into text for comparison. Your speech will be scored based on the Dice coefficient formula. - **Translation**: View side-by-side translations alongside subtitles while doing dictations and speaking exercises. The app supports translations in over 60 languages. - **Vocabularies and Exercises**: Take notes of new words (vocabulary, phrases, etc.) while doing dictations and speaking exercises, and practice with vocabulary exercises. - **Watch Videos from Your Favorite YouTube Channels**: Unlike other apps, this app allows you to watch videos from your favorite YouTube channels as long as the video has subtitles. - **Search Any Videos on YouTube**: Easily search for any videos on YouTube within the app. ## Terms of Service and Privacy Policy. By using this app, you agree to be bound by the following Terms of Service and Privacy Policy: - [Forever102 Terms of Service and Privacy Policy](https://forever102.com/terms-of-service-and-privacy-policy.html). - [YouTube Terms of Service](https://www.youtube.com/t/terms). - [Google Privacy Policy](https://policies.google.com/privacy?hl=en-US). ## Contact. - [Website](https://forever102.com). - [Email](admin@forever102.com). We appreciate all suggestions and comments from our users. Please feel free to give us any feedback, and if you enjoy our apps, consider leaving a review. > **NOTE**: All channels and videos are provided by the public third-party media service YouTube.
langTube
Learn languages by watching YouTube videos with dual subtitles and AI-powered summaries. Create flashcards from new vocabulary and practice speaking to improve fluency. This app makes consistent language learning engaging and effective.
- Dual subtitle YouTube player
- AI video summaries
- Vocabulary flashcards
- Quick dictionary
- Downloadable subtitles
- Learning time notifications
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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
Screenshots
Verdict
The clearest difference is review sentiment: langTube at 50% against SubVi's 0%. langTube also leads on rating (4.4 vs 2.5). SubVi's advantage is ads (none vs shown). On price, ratings volume, update cadence and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SubVi sells 2 in-app purchases, starting at $0.99 per month and langTube sells 5 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.
langTube holds the better App Store score, 4.4 against 2.5. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 0% of SubVi's written reviews are positive against 50% of langTube's.
SubVi ships an update fortnightly, langTube every 3 weeks. The most recent releases landed on June 4, 2026 and September 22, 2026 respectively.
| Parameter | SubVi | langTube |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (4 ratings) | 4.4 (8 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 4 | 8 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 39 MB | 143 MB |
| Age rating | 4+ | 4+ |
| Developer | Tuan Duong | Shingo Yamauchi |
Customer experience
SubVi
langTube
In-app purchases
SubVi
- Monthly subscription.$0.991 Month
- Yearly subscription.$10.491 Year
langTube
- langTube Premium$3.491 Month
- プレミアム1 Month trial$3.491 Month
- [教育版]プレミアム$3.491 Month
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- プレミアム機能$34.991 Year
- プレミアム1 Month trial$34.991 Year








