
75
BU Score
Strong
whowho - Caller ID & Block
✍️ bumetric analysis
“
whowho - Caller ID & Block is an Android app from VP (Inc) in the Lifestyle category, currently rated 4.3★ across 260,860 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 75: Strong (healthy traction). For a Lifestyle app, that means healthy traction.
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 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| High install base (260,860 ratings)METRIC | +$12,000 | |
| 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.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 vVaries with device📂 Lifestyle💰 Free
📝 About this app
<b>▶대한민국 3천만 이용자가 경험한 국민 전화 앱
<b>1. Get informed on numbers as the calls come in</b>
Choose to reject useless spam, and never miss the calls that matter.
WhoWho tells you all you need to know about unknown numbers in real time
- both the good and the spam.
<b>2. Convenient Number Management</b>
Use your smartphone more efficiently by recording important information,
such as whether numbers are safe or spam.
<b>3. Make Community Reports as One</b>
Share information on unknown numbers with other users,
creating a service that’s helpful to all users.
<b>4. Use WhoWho as your default caller on your smartphone</b>
The app allows you to use frequently dialed numbers faster and with more convenience,
and offers several other functions, including friendliness stats on each contact, memos, schedule management, call recording, and others.
In addition, make use of a variety of convenient widgets, including call logs, frequent contacts, and keypad.
<b>5. Block useless numbers for good!</b>
You can identify bad numbers (spam, voice phishing, etc.) before accepting calls,
and you can completely block useless calls using a variety of blocking options.
! However Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS) in accordance with Google’s service policy.
<b>6. WhoWho on Wearables</b>
Use WhoWho on a smart watch by making a simple adjustment to settings.
* WhoWho is a totally free service
* Wireless internet(3G or WiFi) is required for WhoWho to work normally
* Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS).
* If you have any questions, please let us know by e-mail : whowho@ktcs.co.kr</b>
<b>1. Get informed on numbers as the calls come in</b>
Choose to reject useless spam, and never miss the calls that matter.
WhoWho tells you all you need to know about unknown numbers in real time
- both the good and the spam.
<b>2. Convenient Number Management</b>
Use your smartphone more efficiently by recording important information,
such as whether numbers are safe or spam.
<b>3. Make Community Reports as One</b>
Share information on unknown numbers with other users,
creating a service that’s helpful to all users.
<b>4. Use WhoWho as your default caller on your smartphone</b>
The app allows you to use frequently dialed numbers faster and with more convenience,
and offers several other functions, including friendliness stats on each contact, memos, schedule management, call recording, and others.
In addition, make use of a variety of convenient widgets, including call logs, frequent contacts, and keypad.
<b>5. Block useless numbers for good!</b>
You can identify bad numbers (spam, voice phishing, etc.) before accepting calls,
and you can completely block useless calls using a variety of blocking options.
! However Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS) in accordance with Google’s service policy.
<b>6. WhoWho on Wearables</b>
Use WhoWho on a smart watch by making a simple adjustment to settings.
* WhoWho is a totally free service
* Wireless internet(3G or WiFi) is required for WhoWho to work normally
* Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS).
* If you have any questions, please let us know by e-mail : whowho@ktcs.co.kr</b>
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- whowho - Caller ID & Block
- Developer
- VP (Inc)
- Bundle ID
- com.ktcs.whowho
- App Store URL
- Open in App Store
- Category
- Lifestyle
- 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
- $3.0K/mo
- Top-grossing rank
- Not found
- 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
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 VP (Inc)
View all →Full revenue analysis
Read the article-style breakdown for whowho - Caller ID & Block: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.




