# Chartboost

> Chartboost is the advertising machinery behind free mobile play: an SDK, exchange, mediation layer and buying platform that helps app publishers sell attention and marketers acquire users. Founded in San Francisco in 2011 by former Tapulous colleagues Maria Alegre and Sean Fannan, it grew from direct deals between game makers into a programmatic stack reaching 700 million monthly users, sold to Zynga for about $250 million in 2021, and became part of LoopMe in 2024.

- **Founded:** 2011
- **Headquarters:** San Francisco, United States
- **Founders:** Maria Alegre (Co-founder and founding CEO), Sean Fannan (Co-founder and founding CTO)
- **Products:** Chartboost Monetization, Chartboost Advertising, Chartboost Mediation, Chartboost Direct, AI-assisted SDK integration
- **Notable:** Grew from a direct-deal marketplace in 2011 to a platform claiming more than 700 million monthly active users and 60 billion annual impressions., Raised $21 million across two disclosed venture rounds before exiting to Zynga., Acquired by Zynga for approximately $250 million in cash in August 2021.

## Products & services

- **Chartboost Monetization** — An SDK-based ad marketplace for banner, interstitial, rewarded-video and other in-app formats, with bidding and reporting tools for publishers.
- **Chartboost Advertising** — User-acquisition tools through which mobile marketers buy in-app inventory and optimize campaigns toward installs and valuable users.
- **Chartboost Mediation** — Formerly Helium, a unified auction and waterfall layer that connects more than 30 demand sources and reports revenue, fill rate, eCPM and impression data.
- **Chartboost Direct** — A LoopMe-era product giving app publishers direct access to brand demand through programmatic deal structures and deal IDs.
- **AI-assisted SDK integration** — A LoopMe integration workflow that uses AI agents and current Chartboost documentation to generate implementation guidance for publishers.

## Achievements

- Grew from a direct-deal marketplace in 2011 to a platform claiming more than 700 million monthly active users and 60 billion annual impressions.
- Raised $21 million across two disclosed venture rounds before exiting to Zynga.
- Acquired by Zynga for approximately $250 million in cash in August 2021.
- Built and maintains developer SDKs and open-source mediation adapters across iOS, Android and Unity.
- Expanded internationally with an Amsterdam office in 2013 and later operations in Tokyo and Barcelona.
- Added more than twice LoopMe's prior direct SDK traffic when acquired in 2024, according to an industry transaction summary.

## Latest updates

- **2026-09** — Chartboost released iOS SDK 9.14.2, fixing a build-system issue involving debug assertions.
- **2026-04** — LoopMe launched Chartboost Direct to give app publishers direct access to brand demand through new programmatic deal structures.
- **2026-03** — LoopMe introduced an AI-assisted Chartboost SDK integration workflow intended to reduce implementation time and errors.
- **2025-05** — Chartboost in-app bidding became available to publishers on AppLovin's MAX mediation platform.
- **2024-12** — LoopMe acquired Chartboost from Zynga for an undisclosed amount.

## Links

- Website: https://www.chartboost.com/
- LinkedIn: https://www.linkedin.com/company/chartboost
- Twitter/X: https://x.com/Chartboost
- GitHub: https://github.com/ChartBoost

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Profile page: https://yespress.io/chartboost
Published by YesPress — https://yespress.io
Last updated: 2026-09-28