4English - Daily English Vocab
65
Quality Score
Solid
4English - Daily English Vocab
Medium confidence
✍️ bumetric analysis
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4English - Daily English Vocab is an iOS app from 4ENGLISH TECHNOLOGY CO.,LTD, currently rated 4.8★ across 2,570 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Quality Score is 65: Solid (established niche player). For an app like this, that means established niche player. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID tierFREE
💡 Grow this revenue
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- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$90K
↳ What it cost to build · not monthly revenue
Likely range $70K – $120K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Slow ROI — current MRR is well below build cost
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱MVP baseline (design + 1-store ship) | +$28K |
| 📱5 unique screens × $4.5K | +$22K |
| 📦Asset bundle (254 MB) | +$40K |
Total estimate$90K
👥 Estimated audience size
385K
Lifetime downloads (US-equivalent)
Monthly active
57K
Daily active
11K
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲category engagement | ~150 installs / rating |
| 🔁category D30 retention | 15% |
| 📍DAU / MAU stickiness | 0.20 |
DAU / MAU20% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 46/100MID TIERFREE (NO MONETIZATION)underperforming peersRevenue Strength
3.7
Product Quality
8.1
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.2
Operational Safety
9.8
Founder Strength
3.2
Monetization Maturity
0.5
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.76★ across 2,570 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $90K-$160K.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Excellent rating (4.8★)METRIC | +$2,200 | |
| Low install base (2,570 ratings)METRIC | +$1,500 | |
| Mature app (8y old)METRIC | +$1,500 | |
| Multilingual (14 languages)METRIC | +$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🆕 What's New · v10.0.16
• Fixed crashes in Flashcard and Quiz study screens
• Dictionary: fixed auto-play audio — no more wrong language
pronunciation or double audio
• Fixed saving words from dictionary: correct word and definition
are now saved when using Google Translate… Full release notes →
• Dictionary: fixed auto-play audio — no more wrong language
pronunciation or double audio
• Fixed saving words from dictionary: correct word and definition
are now saved when using Google Translate… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- 4English - Daily English Vocab
- Developer
- 4ENGLISH TECHNOLOGY CO.,LTD
- Bundle ID
- tungdx.vn.LearnEnglishByNews
- App Store URL
- Open in App Store
- Category
- Not found
- Content rating
- 17+
- Languages
- AR, EN, FR, DE, ID, JA, KO, RU, ZH, ES, TH, ZH, TR, VI
Company
- Website
- Not found
- Tagline
- Trang chủ
- Description
- Học tiếng Anh mỗi ngày qua tin tức, video song ngữ, podcast và tra cứu từ điển tiện lợi. Tăng cường từ vựng và luyện thi TOEIC, IELTS hiệu quả cùng 4English.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $172/mo
- Top-grossing rank
- Outside top 100 in US
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
📈Ratings growth2,570 ratings+46% lifetimeShow 3-year history estimate ▾
Tracked (2 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
📝 About this app
4English is a "SUPER APPLICATION" that helps you learn English effectively, including the following outstanding functions:
LEARN ENGLISH VOCABULARY
• Learn vocabulary with the scientific method of Spaced Repetition
• Memorize words in many ways: images, flashcards, fill in the blanks,...
• 150+ vocabulary packs: IELTS, TOEIC, TOEFL, idioms, events,...
• Save words directly, and create your word packs through articles, news, stories, and videos,...
READ ENGLISH NEWS AND NEWSPAPER
• Update news and practice English at the same time
• 1000+ Bilingual News and Newspaper articles… View full description on the official store →
LEARN ENGLISH VOCABULARY
• Learn vocabulary with the scientific method of Spaced Repetition
• Memorize words in many ways: images, flashcards, fill in the blanks,...
• 150+ vocabulary packs: IELTS, TOEIC, TOEFL, idioms, events,...
• Save words directly, and create your word packs through articles, news, stories, and videos,...
READ ENGLISH NEWS AND NEWSPAPER
• Update news and practice English at the same time
• 1000+ Bilingual News and Newspaper articles… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 254 MB🔞 17+📱 iOS 13.0+🔖 v10.0.16🔄 updated 0d ago🌐 AR, EN, FR, DE, ID +9💰 Paid
🗣
Voice of Customer
Based on 135 reviews across 7 markets● 59% positive · ● 38% neutral · ● 3% negative · Rating drift: -0.28★ (declining — recent 50: 4.48★ vs lifetime: 4.76★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇨🇦 CA
+0.54
🇺🇸 US
+0.43
🇦🇺 AU
+0.41
🇫🇷 FR
+0.35
🇩🇪 DE
+0.29
🇯🇵 JP
+0.17
🇬🇧 GB
+0.15
Top praise themes
tiếng anh ×24 học tiếng ×15 hữu ích ×11 hiệu quả ×10 tuyệt vời ×10 tính năng ×9 ứng dụng ×9 cải thiện ×7
Top complaint themes
mua ×6 lưu ×4 được ×4 thì ×4 cần ×4 nhiều ×4 tốt ×4 này ×4
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4.75716★ | 2,582 | 4.75716★ this version |
| 🇬🇧 GB | 4.87879★ | 66 | 4.87879★ this version |
| 🇩🇪 DE | 4.68571★ | 70 | 4.68571★ this version |
| 🇫🇷 FR | 4.42553★ | 47 | 4.42553★ this version |
| 🇯🇵 JP | 4.74507★ | 608 | 4.74507★ this version |
| 🇨🇦 CA | 4.79872★ | 467 | 4.79872★ this version |
| 🇦🇺 AU | 4.79765★ | 598 | 4.79765★ this version |
| 🇧🇷 BR | 4.8125★ | 32 | 4.8125★ this version |
| 🇮🇳 IN | 4.94118★ | 17 | 4.94118★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for 4English - Daily English Vocab: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why medium confidence: 2,570 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
3 answers · auto-generated from this app's public dataHow much does 4English - Daily English Vocab make per month?▴
Based on our ML-calibrated revenue forecast, 4English - Daily English Vocab earns approximately $172/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
Who makes 4English - Daily English Vocab?▴
4English - Daily English Vocab is published by 4ENGLISH TECHNOLOGY CO.,LTD on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is 4English - Daily English Vocab's BU Score?▴
4English - Daily English Vocab has a BU Score of 65/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.