Source-backed analysis7
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
7 reference sourcesInformation updated Nov 12, 2026
How we review
4You Review
Video-based language app with shadowing, dictation and AI practice
By AppDuo Editorial Team · Fact-checked
- iOS
- Android
- Web
On this page
Decide at a glance
Our verdict
A fit for learners who want listening and speaking practice from real videos, with vocabulary, shadowing and AI conversation in one app. Trade-offs: it only launched in 2026, store listings show an English-only interface, the Android version contains ads, and the free tier's limits are not published.
Best for: Learners who want shadowing and dictation on videos they pick
Skip it if: Anyone needing a teacher-led course or formal certification
Pros
- Turns YouTube, TikTok or uploaded videos into lessons with bilingual subtitles and a one-tap dictionary
- Many practice modes in one app: shadowing, dictation, cloze, AI conversation, spaced-repetition vocabulary review
- High ratings on both stores (Vietnam App Store 4.67/5 from 3,583 ratings; Google Play 4.6/5)
Cons
- Profiles are public by default, AI inputs may be shared with OpenAI, and the App Store and Google Play privacy declarations contradict each other
- The Android listing says it contains ads, and the privacy policy says third-party ad networks serve personalised ads
All pros and cons · Who is it for?
More pros
- Yearly plan listed at $45.99 for 12 months (about $3.83/month) in the US App Store description
More cons
- Free-tier limits are unpublished, the in-app purchase list shows several prices for the same period without plan names, and one App Store reviewer complains new features keep moving into the paid tier
- Support is by email only; the vendor does not process refunds itself and leaves them to Apple or Google
Best for
- Multi-language learners (the vendor cites 40+ languages)
Skip it if
- Anyone who wants the free tier's exact limits before installing
Experience & key features
What 4You is
4You is a language-learning app from 4ENGLISH TECHNOLOGY CO., LTD, available on iOS, Android and the web (4you.study). Per its store pages, it turns videos the learner watches into lessons: bilingual subtitles and a one-tap dictionary, followed by shadowing, dictation and cloze exercises. Learners can pick videos in the app, share from YouTube and TikTok or upload their own. The App Store version was released on 20 January 2026.
Beyond video, the app has a vocabulary notebook with flashcards and spaced repetition, a Word Garden game, AI speaking practice from A1 to C2, plus reading, writing, grammar and a community. The vendor says it supports learning 40+ languages, including English, Chinese, Korean, Japanese, French, German and Spanish.
Pricing and value
The app is free to download, with auto-renewing subscriptions. The US App Store description lists $7.99/month, $26.99/3 months and $45.99/12 months, but the store's in-app purchase list shows several other prices for the same periods, from $5.99 to $91.99, without plan names, so it is hard to tell which is the standard rate. The Android listing says the app contains ads. The terms say the vendor cannot refund directly; requests go through Apple or Google.
Who it suits
4You suits self-directed learners who like using videos as raw material and want several listening and speaking drills in one place. Those who need a structured curriculum, a teacher or formal grading may look at apps such as Duolingo, Babbel or Busuu. As the app is new, it is worth reading the privacy details and renewal terms before subscribing.
Screenshots
Plans & pricing
Prices last verified Nov 12, 2026
Miễn phí / Free
PersonalFree
Free to download. The App Store listing and the vendor's terms do not spell out the free tier's limits; per the terms, premium features sit behind the subscription.
Premium (đăng ký trong app)
Personal$7.99/mo
$3.83/mo billed yearly
Auto-renewing. The US App Store description lists $7.99/month, $26.99/3 months or $45.99/12 months (about $3.83/month). The store's in-app purchase list also shows other price points for the same periods ($5.99 to $91.99) without plan names. The vendor's terms also mention one-time purchases for individual videos.
- Free plan limits
- The vendor does not clearly publish the free tier's limits on the pages reviewed.
- Free trial
- No free trial
Cancellation & refunds
Per the vendor's terms, all purchases go through Apple or Google and the vendor cannot process refunds itself; refund requests follow each store's policy.
Privacy
The privacy policy says profiles are public by default (switchable to private). Its section on Premium AI features says data may be shared with AI vendors such as OpenAI, which may keep a copy of text or audio responses; audio may also go to a third-party speech recogniser. The vendor works with third-party ad networks for personalised ads, which can be turned off in settings. On the App Store the vendor declares contact info, user content, identifiers, usage data and diagnostics as possibly used for tracking, while the Google Play data-safety section declares no data collected or shared. The two declarations do not match.
4You alternatives
7.8/10Duolingo
Bite-sized daily language lessons with streaks and leaderboards
6.9/10Memrise
Vocabulary app built on native-speaker videos, with AI speaking practice
Controversies & incidents
Issues documented by the press, regulators, courts or the vendor itself. Every item is sourced; unproven claims are labelled as allegations. Last researched: Nov 12, 2026
No significant controversies or incidents found in the sources we checked.
Frequently asked questions
Is 4You free?
Free to download with in-app purchases. The US App Store description lists subscriptions from $7.99/month. The vendor does not state the free tier's limits, and the Android version contains ads.
Can I learn from YouTube or TikTok videos?
Per the Google Play listing, you can share videos from YouTube and TikTok or upload your own to make lessons.
How do I cancel and get a refund?
Cancel in the App Store or Google Play subscription settings at least 24 hours before renewal. Refunds are decided by Apple or Google, per the vendor's terms.
Is my profile public?
Per the privacy policy, profiles are public by default but can be set to private in settings.
Review evidence & sources7
Scores
- Ease of use
- 7.5
- Features
- 7.5
- Value for money
- 6.8
- Performance
- 6.8
- Support
- 6.0
- Privacy & security
- 5.8
Why this score
A clear flow: pick or paste a video, read bilingual subtitles, tap a word to look it up. Stores list an English interface only; one reviewer reports slow loading when pasting long videos, and others report English subtitles rendering right-to-left when Arabic is the native language.
Why this score
Broad scope: shadowing, dictation, cloze, AI speaking, reading, writing, grammar, vocabulary and a community, with 40+ languages per the vendor. No independent assessment of each part's quality was found.
Why this score
The US App Store description lists a $45.99 yearly plan (about $3.83/month). But the in-app purchase list shows several prices for the same period without plan names, the free tier is not described, the Android version contains ads, and refunds depend on Apple or Google.
Why this score
Store ratings are high (4.6 to 4.7), but reviewers mention slow loading on long videos and missing first words during shadowing; no independent measurements were found.
Why this score
The vendor lists only a support email on the stores; neither the website nor the other pages reviewed show a help center or chat channel.
Why this score
Profiles are public by default, AI and speech data may go to third parties, third-party ad networks serve personalised ads, and the App Store and Google Play declarations contradict each other. In its favour: profiles can be made private, personalised ads can be turned off, and Google Play lists encryption in transit and deletion on request.
What users say
- App Store (Việt Nam)4.7/5 · 3,583
- App Store (US)4.7/5 · 103
- Google Play4.6/5 · 2,910
Sources
- Vendor-provided4You official websiteNov 12, 2026
- Vendor-provided4You privacy policyNov 12, 2026
- Vendor-provided4You terms of serviceNov 12, 2026
- storeApp Store listing (US)Nov 12, 2026
- storeApp Store listing (Vietnam)Nov 12, 2026
- storeGoogle Play listingNov 12, 2026
- storeiTunes lookup API (Vietnam)Nov 12, 2026
Specs & compatibility
- Developer
- 4ENGLISH TECHNOLOGY CO., LTD
- Headquarters
- Vietnam
- Launched
- 2026
- Category
- Education
Capabilities
- AI features
- Mobile app
Platforms
- iOS
- Android
- Web
Interface languages
- English
Integrations
- YouTube
- TikTok
Support
Change history
- Update.Version 2.7.7 released; release notes read only "fix bugs".
- Update.Android version updated; the Google Play page at the time of checking showed 100K+ downloads.
- Launch.App first released on the App Store.
About the author
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