English Grammar Master
73
Quality Score
Strong
✍️ bumetric analysis
“
English Grammar Master is an Android app from VD in the Education category, currently rated 4.6★ across 19,806 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 73: Strong (healthy traction). For a Education 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID 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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$95K
↳ What it cost to build · not monthly revenue
Likely range $70K – $130K
$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 |
| ⚙ Education complexity ×1.20 | +$10K |
| 🌐 Cross-platform reach (iOS + Android) | +$33K |
Total estimate
$95K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$25K
↳ What it would sell for · not monthly revenue
Marketplace range $15K – $30K · 17× MRR multiple
💸
~0.3× build cost (under-water)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
Final multiple
17× MRR
👥 Estimated audience size
1.6M
Lifetime downloads (US-equivalent)
Monthly active
295K
Daily active
88K
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
| 📲 Education engagement | ~85 installs / rating |
| 🔁 Education D30 retention | 18% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
30% 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 · 50/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
6.2
Product Quality
9.3
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
7.5
Market Position
0.0
Operational Safety
7.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.64★ across 19,806 reviews — exceptional (top 1% in category).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 785d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (785d since update).
🎯 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:
| Mid install base (19,806 ratings)METRIC | +$5,500 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| Mature app (10y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| 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 Grammar Master
- Developer
- VD
- Bundle ID
- com.vd.englishgrammar
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.gamesnapps4u.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $253/mo
- Top-grossing rank
- Not found
- 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 growth19,806 ratings+16% lifetimeShow 3-year history estimate ▾
Tracked (3 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
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
English Grammar Master is completely offline english grammar reference book to learn and master english Grammar , covering a wide range of grammar topics .
Topics Included
1. Adjectives
2. Adverbs
3. Articles
4. Capitalisation
5. Conditionals
6. Conjunctions
7. Degree of Comparison
8 . Determiners
9. Direct & Indirect Speech
10. Distributives
11. Few , a few differences
12. Gerunds
13. Going to
14. Had Better
15. Homonyms
16. Idioms
17. Independent & Dependent Clauses
18. Irregular Verbs
19. Modals
20. Must , have to differences
21. Nouns & Pronouns
22.… View full description on the official store →
Topics Included
1. Adjectives
2. Adverbs
3. Articles
4. Capitalisation
5. Conditionals
6. Conjunctions
7. Degree of Comparison
8 . Determiners
9. Direct & Indirect Speech
10. Distributives
11. Few , a few differences
12. Gerunds
13. Going to
14. Had Better
15. Homonyms
16. Idioms
17. Independent & Dependent Clauses
18. Irregular Verbs
19. Modals
20. Must , have to differences
21. Nouns & Pronouns
22.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v7.0.0🔄 updated 0d ago📂 Education💰 Free📺 Ad-supported
📅
What Worked™ · Development Pipeline
2 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
→ 30 days after: reviews −19 high confidence
2026-05
🚀
First tracked snapshot — initial data captured
→ 30 days after: reviews −14 high confidence
📸
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.
2026-05-09
2026-06-13
Slot 2
2 ver.
2 ver.
2026-05-09
2026-06-13
Slot 3
2 ver.
2 ver.
2026-05-09
2026-06-13
Slot 4
2 ver.
2 ver.
2026-05-09
2026-06-13
Slot 5
2 ver.
2 ver.
2026-05-09
2026-06-13
Slot 6
2 ver.
2 ver.
2026-05-09
2026-06-13
🔔
Track this app’s revenue
FREEGet an email when revenue moves by your threshold. No spam, unsubscribe in one click.
📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for English Grammar Master: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by VD
View all →📦 Portfolio summaryINDIE studio
40apps·$4K/mocombined
✓ Diversified — top app contributes 6%; risk spread across portfolio
About this analysis
Why high confidence: 19,806 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does English Grammar Master make per month?▴
Based on our ML-calibrated revenue forecast, English Grammar Master earns approximately $1.3K/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 Grammar Master?▴
Browse the full Education 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 Grammar Master?▴
English Grammar Master is published by VD on the Google Play 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 Grammar Master's BU Score?▴
English Grammar Master has a BU Score of 73/100 (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.