59
BU Score
Solid
English Grammar in Use & Test
✍️ BU Analytics Review
“
English Grammar in Use & Test is an iOS app from Xuan Trung Truong in the News category, currently rated 4.6★ across 324 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 59 — Solid (established niche player). For a News app, that means established niche player.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
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 (4.6★)METRIC | +$2,200 | |
| Established app (5y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (324 ratings)METRIC | +$400 | |
| Single-language (English only)METRIC | −$400 |
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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
May 24
Jul 24
Aug 24
Sep 24
Oct 24
Dec 24
Jan 25
Sep 25
Nov 25
Mar 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 19 MB🔞 4+📱 iOS 14.0+🔖 v1.1.10🔄 updated 3mo ago🌐 EN📂 News💰 Paid🚀 Launched 2020 (5y old)
📝 About this app
English Grammar is the study of words and the ways words work together in English. An invisible force that guides us as we put words together into sentences. Any person who communicates using a particular language is consciously or unconsciously aware of the grammar of that language.
English grammar in use and test is a free app with English grammar lessons and English test feature for improving your English skill.
With this app, your English grammar will become better and better. Keep this application always in your pocket. give us feedback and join our English grammar communities for more updates.
+ Tenses
+ Nouns and using
+ Adjective
+ English Tenses
+ Used to
+ Using of Must or Have To
+ Verbs
+ Phrases
+ Plurals
+ Prepositions
+ Pronouns
+ Punctuation
+ Quantifiers
with this app, you also learning grammar and test your English with the easiest way.
This grammar test is the best way to improve your English grammar knowledge. Stunning minimalist design and clear user interface make it easy to test your English language skills.
This English Grammar Test app is perfect for Intermediate and Upper-Intermediate levels.
When you complete your English test you see which aspects of English grammar you are good at and which of them require more practice.
When you make a mistake the app explains you why your answer was not correct. Simple explanations will help you revise information about grammar details.
If you found any problem in this application or anything want to share with us, please feel free to contact us via email: trungstormsix@gmail.com.
English grammar in use and test is a free app with English grammar lessons and English test feature for improving your English skill.
With this app, your English grammar will become better and better. Keep this application always in your pocket. give us feedback and join our English grammar communities for more updates.
+ Tenses
+ Nouns and using
+ Adjective
+ English Tenses
+ Used to
+ Using of Must or Have To
+ Verbs
+ Phrases
+ Plurals
+ Prepositions
+ Pronouns
+ Punctuation
+ Quantifiers
with this app, you also learning grammar and test your English with the easiest way.
This grammar test is the best way to improve your English grammar knowledge. Stunning minimalist design and clear user interface make it easy to test your English language skills.
This English Grammar Test app is perfect for Intermediate and Upper-Intermediate levels.
When you complete your English test you see which aspects of English grammar you are good at and which of them require more practice.
When you make a mistake the app explains you why your answer was not correct. Simple explanations will help you revise information about grammar details.
If you found any problem in this application or anything want to share with us, please feel free to contact us via email: trungstormsix@gmail.com.
🆕 What's New · v1.1.10
Fixed lesson can not refresh problem
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- English Grammar in Use & Test
- Developer
- Xuan Trung Truong
- Bundle ID
- oCoder.English.Grammar.Use.With.Test
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- EN
Company
- Website
- dogiadungchinhhang.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
- $144/mo
- Top-grossing rank
- Outside top 100 in US News
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
📈Ratings growth324 ratings+32300% 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.
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.
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