Topik Test - Learn Korean
56
Quality Score
Solid
✍️ Bumetric analysis
“
Topik Test - Learn Korean is an iOS app from CAO HUNG LE in the Food & Drink category, currently rated 4.5★ across 127 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 56: Solid (established niche player). For a Food & Drink 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
12 snapshots on record
Rating
4.5
Reviews
127 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
12
since Jul 2022
ONE-TIME · BUILD
💰 Estimated build cost
$110K
↳ What it cost to build · not monthly revenue
Likely range $80K – $150K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~1.8y at current MRR
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 (96 MB) | +$18K |
| ⚙ Food & Drink complexity ×1.10 | +$6K |
| ⚙ 5.3y maintenance × ~1-person team | +$31K |
Total estimate
$110K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$100K
↳ What it would sell for · not monthly revenue
Marketplace range $75K – $125K · 18× MRR multiple
💸
~0.9× 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 |
| 📅 5.3y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
18× MRR
👥 Estimated audience size
9.3K
Lifetime downloads (US-equivalent)
Monthly active
1.0K
Daily active
200
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
| 📲 Food & Drink engagement | ~100 installs / rating |
| 📅 5.3y of rating accumulation | -27% |
| 🔁 Food & Drink D30 retention | 14% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
20% sticky
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
Medium confidence · 60%
Also possible
React Native
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
| 📦 App bundle size | 96 MB |
| 🏷 Category context | Food & Drink |
| 📦 Mid-large iOS bundle | → Likely native SwiftUI (post-2020 era) |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2021-12-30 · 1736 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 4y+ since last update | Likely abandoned |
| 👥 Small user base (127 ratings) + 5.3y old | +10% (solo-project pattern) |
Verdict
Likely abandoned
🔬
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 · 41/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
2.9
Product Quality
6.3
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
4.8
Market Position
2.0
Operational Safety
7.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.5★ across 127 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1735d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (1735d 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:
| Excellent rating (4.5★)METRIC | +$2,200 | |
| Multilingual (13 languages)METRIC | +$1,500 | |
| Established app (5y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (127 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.
🆕 What's New · v2.3
Bug fixes and performance improvements
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Topik Test - Learn Korean
- Developer
- CAO HUNG LE
- Bundle ID
- com.starnest.topiktest
- App Store URL
- Open in App Store
- Category
- Food & Drink
- Content rating
- 4+
- Languages
- AR, EN, FR, DE, ID, IT, JA, KO, RU, ZH, ES, TH, VI
Company
- Website
- Not found
- 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
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/mo
- Top-grossing rank
- Outside top 100 in US Food & Drink
- 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 growth139 ratings+6850% lifetimeShow 3-year history estimate ▾
Tracked (12 weeks) Pre-tracking estimate (0 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
Let the Topik Test help you increase 80 Topik points.
With more than 5,000 Topik questions and 60 Topik exams from previous years will be the exam preparation book to store your progress.
Topik Test contains the following features:
- Practice Listen Topik 1 & Topik 2
- Practice Reading Topik 1 & Topik 2
- Practice Vocabulary Topik 1 & Topik 2
- Practice Grammar Topik 1 & Topik 2
- Prepare for Topik 1 & Topik 2
- Practice for Topik 1 & Topik 2
- Practice Topik 1
- Practice Topik 2
- Practice reading Topik 1
- Prepare for the Topik listening test
- Topik Tests with free multiple - choice… View full description on the official store →
With more than 5,000 Topik questions and 60 Topik exams from previous years will be the exam preparation book to store your progress.
Topik Test contains the following features:
- Practice Listen Topik 1 & Topik 2
- Practice Reading Topik 1 & Topik 2
- Practice Vocabulary Topik 1 & Topik 2
- Practice Grammar Topik 1 & Topik 2
- Prepare for Topik 1 & Topik 2
- Practice for Topik 1 & Topik 2
- Practice Topik 1
- Practice Topik 2
- Practice reading Topik 1
- Prepare for the Topik listening test
- Topik Tests with free multiple - choice… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 96 MB🔞 4+📱 iOS 10.0+🔖 v2.3🔄 updated 4y ago🌐 AR, EN, FR, DE, ID +8📂 Food & Drink💰 Paid🚀 Launched 2021 (5y old)
📅
What Worked™ · Development Pipeline
8 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 →
2026-05
🔄
Monetization changed: freemium → free
→ 30 days after: reviews +5 high confidence
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +5 high confidence
2026-03
⭐
Rating ↑ 2.14 → 4.20 (improved 2.06★)
2025-02
⭐
Rating ↑ 1.80 → 2.33 (improved 0.53★)
2024-03
⭐
Rating ↓ 2.33 → 2.00 (dropped 0.33★)
2022-11
⭐
Rating ↑ 1.00 → 2.33 (improved 1.33★)
2022-07
🚀
First tracked snapshot — initial data captured
2022-07
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 5★ | 3 | 5★ this version |
| 🇧🇷 BR | 4.55556★ | 9 | 4.55556★ this version |
| 🇨🇦 CA | 4.75★ | 8 | 4.75★ this version |
| 🇩🇪 DE | 4.22222★ | 9 | 4.22222★ this version |
| 🇫🇷 FR | 3.63636★ | 11 | 3.63636★ this version |
| 🇬🇧 GB | 3.8125★ | 16 | 3.8125★ this version |
| 🇮🇳 IN | 5★ | 2 | 5★ this version |
| 🇯🇵 JP | 4.25466★ | 161 | 4.25466★ this version |
| 🇺🇸 US | 4.51799★ | 139 | 4.51799★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Topik Test - Learn Korean: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by CAO HUNG LE
View all →📦 Portfolio summaryINDIE studio
2apps·$10K/mocombined
Lead-app heavy — top app contributes 50%
About this analysis
Why medium confidence: 127 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Topik Test - Learn Korean make per month?▴
Based on our ML-calibrated revenue forecast, Topik Test - Learn Korean earns approximately $5.0K/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 Topik Test - Learn Korean profitable?▴
With estimated build cost $110K and monthly revenue $5.0K, Topik Test - Learn Korean looks break-even-grade — payback period sits around 1.8 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Topik Test - Learn Korean have?▴
Estimated audience: ~9K lifetime downloads, ~1K monthly active users, and ~200 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 Topik Test - Learn Korean?▴
Browse the full Food & Drink 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 Topik Test - Learn Korean built with?▴
Our heuristic places Topik Test - Learn Korean on the Native iOS (SwiftUI) stack (Medium confidence, 60%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is Topik Test - Learn Korean still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 4+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Topik Test - Learn Korean sell for?▴
Estimated acquisition value: $100K (marketplace range $75K – $125K). Calculated as 18× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was Topik Test - Learn Korean last updated?▴
Topik Test - Learn Korean last shipped a new version on 2021-12-30 — more than 4 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Topik Test - Learn Korean?▴
Topik Test - Learn Korean is published by CAO HUNG LE 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 Topik Test - Learn Korean's BU Score?▴
Topik Test - Learn Korean has a BU Score of 56/100 (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.