54
Quality Score
Solid
Speak English: Prepositions
Medium confidence
✍️ bumetric analysis
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Speak English: Prepositions is an Android app from Fenls - Learn English in the Education category, currently rated 4.1★ across 362 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 54: Solid (established niche player). For a Education app, 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 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
ONE-TIME · BUILD💰 Estimated build cost
$145K
↳ What it cost to build · not monthly revenue
Likely range $110K – $195K
$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 |
| ⚙Education complexity ×1.20 | +$11K |
| 🌐Cross-platform reach (iOS + Android) | +$39K |
| ⚙5.9y maintenance × ~1-person team | +$35K |
Total estimate$145K
👥 Estimated audience size
21K
Lifetime downloads (US-equivalent)
Monthly active
2.9K
Daily active
870
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 |
| 📅5.9y of rating accumulation | -30% |
| 🔁Education D30 retention | 18% |
| 📍DAU / MAU stickiness | 0.30 |
DAU / MAU30% sticky
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 80%
Also possible
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 🏷Category context | Education |
| 📦Compact Android bundle | → Native Kotlin |
🔬
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
Building · 55/100MID TIERcompetitive build-outGrowth Velocity
5.0
Founder Strength
5.7
Product Quality
5.8
Revenue Strength
3.7
Monetization Maturity
5.0
Defensibility
9.0
Market Position
0.0
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.11★ across 362 reviews — below category median.
- 📍 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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Good rating (4.1★)METRIC | +$800 | |
| Established app (5y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (362 ratings)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.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 vVaries with device📂 Education💰 Free📺 Ad-supported💎 IAP $1.99 - $68.49 per item🚀 Launched 2020 (5y old)
📝 About this app
🌟 Are you ready to master the art of English? Whether you're gearing up for IELTS, diving into TOEFL prep, or just want to polish your language skills, our app is your ultimate companion! 🌟
<b>Unlock the Magic of English Prepositions!</b>
Elevate your English with an app designed to perfect your understanding and use of prepositions. This course covers not just the basics but also dives into the nuances that differentiate American and British usage. Ideal for self-learners, educational institutions, and anyone in between!
<b>Say Goodbye to Preposition Puzzles!</b>… View full description on the official store →
<b>Unlock the Magic of English Prepositions!</b>
Elevate your English with an app designed to perfect your understanding and use of prepositions. This course covers not just the basics but also dives into the nuances that differentiate American and British usage. Ideal for self-learners, educational institutions, and anyone in between!
<b>Say Goodbye to Preposition Puzzles!</b>… View full description on the official store →
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Speak English: Prepositions
- Developer
- Fenls - Learn English
- Bundle ID
- com.fenls.learnenglishprepositions
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- apps.fenls.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
- $246/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- $1.99 - $68.49 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.
✨AI Revenue EstimateCONFIDENCE: LOW
No public revenue data is available for the Android app "Speak English: Prepositions" by Fenls - Learn English from sources like Sensor Tower, Statista, Adapty, Reddit, or founder claims. General market data for language learning apps is available, but specific figures for this app could not be found.
Sources mentioned: Sensor Tower, Statista, Adapty, Reddit
📈Ratings growth362 ratings+71% lifetimeShow 3-year history estimate ▾
Tracked (1 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.
More by Fenls - Learn English
View all →📦 Portfolio summaryINDIE studio
11apps·$1K/mocombined
✓ Diversified — top app contributes 17%; risk spread across portfolio
Full revenue analysis
Read the article-style breakdown for Speak English: Prepositions: 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: 362 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does Speak English make per month?▴
Based on our ML-calibrated revenue forecast, Speak English earns approximately $245/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.
Is Speak English profitable?▴
With estimated build cost $145K and monthly revenue $245, Speak English looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Speak English have?▴
Estimated audience: ~21K lifetime downloads, ~2K monthly active users, and ~870 daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like Speak English?▴
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.
What is Speak English built with?▴
Our heuristic places Speak English on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Who makes Speak English?▴
Speak English is published by Fenls - Learn English 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 Speak English's BU Score?▴
Speak English has a BU Score of 54/100 (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.