whowho - Caller ID & Block

Contains adsIn-app purchases
260K reviews
Content rating
Everyone
10M+
Downloads
Content rating
Everyone
Shares Location, In-App Purchases
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

โ–ถ๋Œ€ํ•œ๋ฏผ๊ตญ 3์ฒœ๋งŒ ์ด์šฉ์ž๊ฐ€ ๊ฒฝํ—˜ํ•œ ๊ตญ๋ฏผ ์ „ํ™” ์•ฑ
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 thatโ€™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 Googleโ€™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
Use WhoWho as default caller. Provides many convenient functions (ex. widget)
Updated on
Sep 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Contacts, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

259K reviews
Valijon Turakulov
August 22, 2026
I installed to get some rest from the spams but it seems this app itself is a scam with tons of advertising every time a call or sms arrives.
5 people found this review helpful
P AE
April 17, 2024
Interface completely in Korean and cannot be changed. Intrusive ads throughout the app. Does not detect spam or previously blocked calls at all. Wants overreaching access to your data and provides virtually nothing but ads in return. TPhone app is hands down better in every way. Hate that Fold 4 with current carrier forces this down your throat to use the Bixby Call feature. Horrid app. Uninstalled a 3rd time. Keep hoping it will improve, only to be seriously disappointed. ๐Ÿ˜”
91 people found this review helpful
VP (Inc)
April 17, 2024
์•ˆ๋…•ํ•˜์„ธ์š”, ํ•จ๊ป˜ ์“ฐ๋ฉด ๋” ์ข‹์€ ํ›„ํ›„์ž…๋‹ˆ๋‹ค. ๊ด‘๊ณ ๊ฐ€ ๋งŽ์ด ๋ถˆํŽธํ•˜์‹œ๋‹ค๋ฉด ํ•˜๊ธฐ ๊ฒฝ๋กœ๋ฅผ ํ†ตํ•ด ํ†ตํ™”์ข…๋ฃŒ/๋ถ€์žฌ์ค‘ ์•Œ๋ฆผ์ฐฝ์„ off ํ›„ ์ด์šฉํ•ด ์ฃผ์‹œ๊ธฐ๋ฅผ ๋ถ€ํƒ๋“œ๋ฆฝ๋‹ˆ๋‹ค. 1. ์ „ํ™”์•Œ๋ฆผ ํ›„ํ›„ ์•ฑ ์‹คํ–‰ > ์„ค์ •(์šฐ์ธกํ•˜๋‹จ)> ์ „ํ™” ์•Œ๋ฆผ > ํ›„ํ›„ ์•Œ๋ฆผ์ฐฝ์— ํ‘œ์‹œ > ์ „ํ™”์•Œ๋ฆผ์ฐฝ ์‹คํ–‰ > ํ†ตํ™”์ข…๋ฃŒ/๋ถ€์žฌ์ค‘ '์‹คํ–‰ ์•ˆ ํ•จ' 2. ๋ฌธ์ž์•Œ๋ฆผ ํ›„ํ›„ ์•ฑ ์‹คํ–‰ > ์„ค์ •(์šฐ์ธกํ•˜๋‹จ)> ๋ฌธ์ž ์•Œ๋ฆผ > ๋ฌธ์ž ์•Œ๋ฆผ์ฐฝ '์‹คํ–‰ ์•ˆ ํ•จ' ์ฐธ๊ณ ๋กœ, '๊ด‘๊ณ ์—†๋Š” ํ›„ํ›„'์ •๊ธฐ๊ตฌ๋…์‹œ ํ›„ํ›„์•ฑ์„ ๊ด‘๊ณ ์—†์ด ์ด์šฉํ•˜์‹ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋” ๋‚˜์€ ์„œ๋น„์Šค ์ œ๊ณต์„ ์œ„ํ•ด ๋…ธ๋ ฅํ•˜๋Š” ํ›„ํ›„๊ฐ€ ๋˜๋„๋ก ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค. ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค.
Richard Luijten
February 25, 2023
UI looks horrible and cluttered, and only 1/4th of the app is translated (it would literally cost less than 10๋งŒ์› to get these simple words and sentences translated) but I'm interested in the features so I'm reserving judgment for now. Off to a bad start though.
188 people found this review helpful
VP (Inc)
February 27, 2023
Hello whowho user First of all, we are very sorry for the inconvenience. We are trying to provide better service, so we ask for your understanding. Once again, we apologize for any inconvenience caused. Thank you

Whatโ€™s new

์ฃผ์š” ์—…๋ฐ์ดํŠธ ์‚ฌํ•ญ
ใ† ์•ฑ ์‚ฌ์šฉ์„ฑ๊ณผ ์•ˆ์ •์„ฑ์„ ๊ฐ•ํ™”ํ•˜๊ณ  ๋ฒ„๊ทธ๋ฅผ ๊ฐœ์„ ํ–ˆ์–ด์š”.
Content rating
Everyone
Shares Location, In-App Purchases
Learn more

App support

Phone number
+8221040099
About the developer
๋ธŒ์ดํ”ผ(์ฃผ)
whowho@whox2.co.kr
์„์ง€๋กœ๋™ ์„์ง€๋กœ 170, ์„์ง€ํŠธ์œˆํƒ€์›Œ ๋™๊ด€ 13์ธต ์ค‘๊ตฌ, ์„œ์šธํŠน๋ณ„์‹œ 04548 South Korea
+82 10-8644-0393

Similar apps