whowho - Caller ID & Block
Communication
10 Million+ installs
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- CategoryCommunication
- PlatformAndroid
- DeveloperVP (Inc)
- In-app PurchasesYes
- Installs10 Million+
- Updated2026-10-19
- Size94 M
- Version4.27.1
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Editor's Review
Developed by VP (Inc), whowho - Caller ID & Block is a communication app available on Google Play. In the developer's own words: "Use WhoWho as default caller.
Provides many convenient functions
(ex. widget)." It has passed 10 Million+ installs, and users rate it 4.3 out of 5 across 259.7K ratings. The latest version (4.27.1) was released on 2026-10-19, so the app is still being actively updated. Good to know: it offers optional in-app purchases and needs about 94 MB of storage.
How To Use?
대한민국 3천만 이용자가 경험한 국민 전화 앱
both the good and the spam
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
WhoWho is a totally free service
Wireless internet(3G or WiFi) is required for WhoWho to work normally
Google Play
Description
▶대한민국 3천만 이용자가 경험한 국민 전화 앱
1. Get informed on numbers as the calls come in
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.
2. Convenient Number Management
Use your smartphone more efficiently by recording important information,
such as whether numbers are safe or spam.
3. Make Community Reports as One
Share information on unknown numbers with other users,
creating a service that’s helpful to all users.
4. Use WhoWho as your default caller on your smartphone
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.
5. Block useless numbers for good!
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.
6. WhoWho on Wearables
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
Screenshots
4.3
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