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60
BU Score
Solid

Sino Korean Keyboard

4.3 ✍️ Editor
✍️ bumetric analysis

Sino Korean Keyboard is an Android app from Dongyon Kang in the Tools category, currently rated 4.3★ across 3,112 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 60: Solid (established niche player). For a Tools 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
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Forecast Revenue / mo
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💰 Forecast Revenue / mo

MODEL
Revenue 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 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Low install base (3,112 ratings)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

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
🔖 vVaries with device📂 Tools💰 Free

📝 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. For those of you rating it a 1 star, please please send me an e-mail at fancyydk@gmail.com with your reason, so I can improve it for future releases. Thank you!

==Description==
This is a Korean IME keyboard that lets you type in Sino Korean (Chinese characters used in Korea) just as you would on a PC. The number keys are placed along with the character keys, so it's very convenient to type numbers and characters at the same time.

This is a free version with limited features. For instance, when a Korean character is typed and the Chinese key is pressed, three Chinese characters are shown at once, even though there may be more than three corresponding characters. To view other characters, you have to keep pressing the Chinese key until you find the character that you're looking for.

If you want a keyboard that lists all the possible Chinese characters for a Korean character, and that which has commonly used keys placed at more convenient places, please buy the paid version of this keyboard.

If you encounter a problem, please email me at fancyydk@gmail.com and I will try to fix the problem as soon as possible.

Thank you for your support and please look forward to updates and newer versions.

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
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Founded
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HQ / Address
Not found
Employees
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Logo
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Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
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AI annual estimate
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ML model estimate / mo
$781/mo
Top-grossing rank
Not found
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
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X followers
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Public statements
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Funding

Total raised
Not found
Last round
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Investors
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Crunchbase
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AngelList
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Press & Links

Articles found
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Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
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Contact page
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About page
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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.

Similar apps in Tools

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.
Read deep-dive →