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Billionaire Profile
John Krystynak
Global Rank
#940

Image: Public domain | via Wikimedia Commons

John Krystynak

CEO, AppLovin Corp
US
Real-Time Net Worth
$4.4B
As of December 2025
Age
57
Source
marketing software, mobile games
Industry
technology
Citizenship
US

Biography

John Krystynak, a US citizen and co-founder of AppLovin, has established himself as a prominent figure in the technology sector. His primary source of wealth stems from marketing software and mobile games, with his current net worth estimated at $4.4 billion as of November 28, 2025. Krystynak, at age 57, has been instrumental in the mobile app industry, where he served as the Chief Technology Officer of AppLovin until 2020. His career reflects a focus on the technological backbone of the app economy, contributing significantly to the growth of mobile gaming and marketing solutions.

Wealth Over Time

In-Depth Profile

Early Life and Education

Information about John Krystynak's early life and childhood is limited. However, it is known that he is a US citizen and attended the University of California, Santa Barbara, where he earned a Bachelor of Science degree.

Rise to Success

John Krystynak co-founded AppLovin in 2012 with Adam Foroughi and Andrew Karam. Serving as the Chief Technology Officer (CTO) until 2020, he was a key player in developing the technology that powered AppLovin's marketing, monetization, and analytics platforms. These platforms have served thousands of mobile developers and support a portfolio of hit games. AppLovin went public on April 15, 2021, under the ticker symbol APP.

Key Business Strategies

Krystynak's career was focused on building and optimizing the AppLovin platform, contributing to its growth to support over 470 million daily active users. AppLovin's strategy included acquiring companies to expand its capabilities, such as the German mobile ad-network Moboqo in 2014 and the in-app bidding company MAX in 2018.

Philanthropy

Information regarding John Krystynak’s specific philanthropic endeavors is not readily available.

Career Milestones

2012

Cofounded AppLovin

Co-founded AppLovin, a mobile technology company.

2020

Transitioned from CTO at AppLovin

Moved into an advisory role at AppLovin.