English for Beginners: LinDuo
74
Quality Score
Strong
English for Beginners: LinDuo
High confidence
✍️ bumetric analysis
“
English for Beginners: LinDuo is an iOS app from LinDuo in the News category, currently rated 4.9★ across 114,943 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 74: Strong (healthy traction). For a News app, that means healthy traction. 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
$5.0M
per month
→
12-mo forecast
$5.1M – $6.8M
per month
→
24-mo forecast
$5.7M – $8.6M
per month
MEGA tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- 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
🤖Also on Android
$2.6K/mo · 114K ratings · 4.9★
View →
ONE-TIME · BUILD
💰 Estimated build cost
$120K
↳ What it cost to build · not monthly revenue
Likely range $90K – $160K
$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 |
| 💎 In-app purchase plumbing | +$9K |
| 📦 Asset bundle (280 MB) | +$40K |
| ⚙ News complexity ×1.20 | +$19K |
Total estimate
$120K
👥 Estimated audience size
13.5M
Lifetime downloads (US-equivalent)
Monthly active
2.0M
Daily active
900K
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
| 📲 News engagement | ~120 installs / rating |
| 🔁 News D30 retention | 15% |
| 📍 DAU / MAU stickiness | 0.45 |
DAU / MAU
45% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0M/mo · ML-estimated from 234 triggers
Growth rate
+1.5% MoM · MEGA tier baseline (compound monthly)
6 months
$4.9M – $6.0M
12 months
$5.1M – $6.8M
24 months
$5.7M – $8.6M
Compound growth at +1.5% MoM (tier baseline for MEGA). Range widens with horizon — typical noise band ±10% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Mixed signals · 68/100MEGA TIERcompetitive but cautiousRevenue Strength
6.7
Product Quality
9.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
9.3
Operational Safety
10.0
Founder Strength
6.4
Monetization Maturity
5.0
- 💰 Revenue: Healthy — $2.0M - $10.0M/mo · MEGA tier · low confidence, trajectory unclear.
- ⭐ Quality: 4.86★ across 114,943 reviews — exceptional (top 1% in category).
- 📍 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: Strong subscription moat. Hard to outcompete on retention. Better angle: free alternative with one-time purchase, or feature parity for an underserved sub-niche.
💵 For acquirers: Estimated asking range 18-32× monthly = $90.0M-$160.0M.
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:
| High install base (114,943 ratings)METRIC | +$12,000 | |
| Excellent rating (4.9★)METRIC | +$2,200 | |
| Multilingual (28 languages)METRIC | +$1,500 | |
| Established app (7y old)METRIC | +$800 | |
| 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.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- English for Beginners: LinDuo
- Developer
- LinDuo
- Bundle ID
- com.lin.duo.hd.english
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- AR, BE, CS, NL, EN, FR, DE, EL, HI, HU, ID, IT, JA, KK, KO, FA, PL, PT, RO, RU, ZH, ES, TL, TH, TR, UK, UZ, VI
Company
- Website
- lin-duo.com
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- 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
- $86/mo
- Top-grossing rank
- Outside top 100 in US News
- All-time revenue
- Not found
- Pricing
- $1.99 - $29.90 per item
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 growth114,943 ratings+11494200% lifetimeShow 3-year history estimate ▾
Tracked (18 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.
🚀Version Release Timeline2 releases tracked
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
<b>ADVANTAGES OF OUR APP:</b>
* Pronunciation by a native speaker
* 2375 words split into 180 topic lessons
* Does not require permanent Internet connection
* Beautiful illustrations for each word
* Phonetic transcription for each word
* Dark interface to study at night
* Choose from male and female voice
* Built in app dictionary with progress
* Game "True or False" to review pas material
* Special lessons with favorite, difficult, old, random words
* Flexible sound settings (music, speaker, effects)
* Just 10-15 minutes per day to learn all words
* For adults and teens 13+… View full description on the official store →
* Pronunciation by a native speaker
* 2375 words split into 180 topic lessons
* Does not require permanent Internet connection
* Beautiful illustrations for each word
* Phonetic transcription for each word
* Dark interface to study at night
* Choose from male and female voice
* Built in app dictionary with progress
* Game "True or False" to review pas material
* Special lessons with favorite, difficult, old, random words
* Flexible sound settings (music, speaker, effects)
* Just 10-15 minutes per day to learn all words
* For adults and teens 13+… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 280 MB🔞 4+📱 iOS 11.0+🔖 v5.36.1🔄 updated 0d ago🌐 AR, BE, CS, NL, EN +23📂 News💰 Paid📺 Ad-supported💎 IAP $1.99 - $29.90 per item
📅
What Worked™ · Development Pipeline
7 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-06
📸
Refreshed store screenshots — 8 of 8 updated
2026-06
📈
Crossed 500 ratings — social-proof flywheel kicking in
2026-05
🔄
Monetization changed: freemium → free
→ 30 days after: revenue −$86/mo · rating +0.09★ · reviews +114,841 medium · co-occurring
2026-05
🔧
Shipped update — v5.32.1 → v5.36.1
→ 30 days after: revenue −$86/mo · reviews +114,219 low · multiple changes
2026-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2024-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
2020-12
🚀
First tracked snapshot — initial data captured
📸
Store Page History
8 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPhone screenshots
Slot 1
2 ver.
2 ver.
2026-05-13
2026-06-23
Slot 2
2 ver.
2 ver.
2026-05-13
2026-06-23
Slot 3
2 ver.
2 ver.
2026-05-13
2026-06-23
Slot 4
2 ver.
2 ver.
2026-05-13
2026-06-23
Slot 5
2 ver.
2 ver.
2026-05-13
2026-06-23
Slot 6
2 ver.
2 ver.
2026-05-13
2026-06-23
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4.77228★ | 101 | 4.77228★ this version |
| 🇬🇧 GB | 5★ | 8 | 5★ this version |
| 🇩🇪 DE | 4.95652★ | 23 | 4.95652★ this version |
| 🇫🇷 FR | 4.77142★ | 35 | 4.77142★ this version |
| 🇯🇵 JP | 5★ | 4 | 5★ this version |
| 🇨🇦 CA | 4.63636★ | 11 | 4.63636★ this version |
| 🇦🇺 AU | 4.71429★ | 7 | 4.71429★ this version |
| 🇧🇷 BR | 4.5★ | 4 | 4.5★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for English for Beginners: LinDuo: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by LinDuo
View all →📦 Portfolio summaryINDIE studio
7apps·$8K/mocombined
✓ Diversified — top app contributes 29%; risk spread across portfolio
About this analysis
Why high confidence: 114,943 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does English for Beginners make per month?▴
Based on our ML-calibrated revenue forecast, English for Beginners earns approximately $86/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.
What apps are like English for Beginners?▴
Browse the full News category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
Who makes English for Beginners?▴
English for Beginners is published by LinDuo 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 English for Beginners's BU Score?▴
English for Beginners has a BU Score of 74/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.