Sino Korean Keyboard
60
Quality Score
Solid
Sino Korean Keyboard
Medium confidence
✍️ bumetric analysis
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Sino Korean Keyboard is an Android app from Dongyon Kang in the Tools category, currently rated 4.3★ across 3,106 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 60: Solid (established niche player). For a Tools 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
$780
per month
→
12-mo forecast
$682 – $2460
per month
→
24-mo forecast
$632 – $5691
per month
INDIE 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
$70K
↳ What it cost to build · not monthly revenue
Likely range $50K – $95K
$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 |
| ⚙ Tools complexity ×0.90 | $-5049 |
| 🌐 Cross-platform reach (iOS + Android) | +$24K |
Total estimate
$70K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$10K
↳ What it would sell for · not monthly revenue
Marketplace range $10K – $15K · 14× MRR multiple
💸
~0.1× 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 |
| 🏷 Tools category multiple | -8% |
Final multiple
14× MRR
👥 Estimated audience size
590K
Lifetime downloads (US-equivalent)
Monthly active
125K
Daily active
22K
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
| 📲 Tools engagement | ~190 installs / rating |
| 🔁 Tools D30 retention | 22% |
| 📍 DAU / MAU stickiness | 0.18 |
DAU / MAU
18% sticky
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$780/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
6 months
$665 – $1.6K
12 months
$682 – $2.5K
24 months
$632 – $5.7K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Early-stage solo · 44/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
3.9
Product Quality
7.7
Revenue Strength
2.9
Monetization Maturity
1.0
Defensibility
4.5
Market Position
0.0
Operational Safety
10.0
- 💰 Revenue: Marginal — $312 - $1952/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.27★ across 3,106 reviews — strong (top 10%).
- 📍 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 = $14K-$24K.
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:
| Low install base (3,106 ratings)METRIC | +$1,500 | |
| Mature app (14y old)METRIC | +$1,500 | |
| Good rating (4.3★)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
- Sino Korean Keyboard
- Developer
- Dongyon Kang
- Bundle ID
- com.fancyydk.android.sinokoreankeyboard
- App Store URL
- Open in App Store
- Category
- Tools
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- Not found
- 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
- $781/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 growth3,106 ratings+21% lifetimeShow 3-year history estimate ▾
Tracked (2 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🚀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
==Sino Korean Keyboard does NOT collect any private information==
The warning message that pops up when you first install this keyboard is from Google, warning you about potential danger in installing third-party apps, and it shows up whenever you install ANY keyboard on your device. Sino Korean Keyboard NEVER collects any information whatsoever, private or not, so please don't worry about your private information being stolen.
==Thank you for your reviews==
I would really appreciate any reviews whether a star or 5 stars.… View full description on the official store →
The warning message that pops up when you first install this keyboard is from Google, warning you about potential danger in installing third-party apps, and it shows up whenever you install ANY keyboard on your device. Sino Korean Keyboard NEVER collects any information whatsoever, private or not, so please don't worry about your private information being stolen.
==Thank you for your reviews==
I would really appreciate any reviews whether a star or 5 stars.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.7.1🔄 updated 0d ago📂 Tools💰 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
2026-05
🚀
First tracked snapshot — initial data captured
→ 30 days after: reviews −6 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
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Sino Korean Keyboard: 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: 3,106 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Sino Korean Keyboard make per month?▴
Based on our ML-calibrated revenue forecast, Sino Korean Keyboard earns approximately $780/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 Sino Korean Keyboard?▴
Browse the full Tools 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 Sino Korean Keyboard?▴
Sino Korean Keyboard is published by Dongyon Kang 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 Sino Korean Keyboard's BU Score?▴
Sino Korean Keyboard has a BU Score of 60/100 (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.