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'What`s this number' is the first domestic app to identify phone numbers and has satisfied users in filtering spamming through the very first application of collective intelligence. Since its debut in August 2012, total number of downloads has reached 7 million as of December 2014. The app provides information regarding any incoming calls that are not registered in user's phonebook through domestic wire/wireless phone information, internet search results and users' collective intelligence. With this service, users can instantly figure out incoming calls and thus prevent any unnecessary calls such as voice-phishing or unwanted calls.

Status:  Current

Sector(s):  SaaS, Mobile

Geography:  Seoul, Korea

Other Investors:  Capstone Partners


Young Jung Youn

Sun Woo Han
Head of BD

Hang Rok Lee
Head of Engineering

Ji Young Cho
Head of Design