ContextSDK Raises $4 Million Seed Round Led by Speedinvest to Personalize and Optimize Mobile App Engagement

Key Highlights

• Using real-world context – a new data category for mobile apps based on +200 signals from modern smartphones – Context SDK enables CMOs & their teams to better personalize app user experiences, messaging, and push notifications.
• By utilizing machine learning executed on Device (Edge AI), ContextSDK does not collect personally identifiable information (PII), making personalization and privacy possible. 
• The $4 M round was led by Speedinvest with participation from First Momentum Ventures and US-based Heracles Capital.

‍Personalizing app interactions while maintaining privacy 

A key challenge in the mobile app space is understanding user intent at the start of a session while maintaining user privacy. Mobile apps are used in various contexts - on the go, in noisy environments, or before bed - yet they function the same regardless of the situation. The lack of contextual adaptation leads to missed opportunities for personalized user experiences and results in poor retention. 77% of users currently abandon apps within the first three days of usage and another 95% by three months. 

Using cutting-edge machine learning executed on a device (Edge AI) to interpret some +200 signals automatically collected from modern smartphones, ContextSDK enables apps to adapt to the real-world context of its users without intrusive data collection that compromises privacy. 

Dieter Rappold, CEO and Co-Founder said: “The largest apps in the world have optimized their data, logic, and decision-making on the server side of things. It is obvious that combining that with Edge AI, enabled by machine learning executed on the device will lead to better app experiences, better retention, and ultimately monetization.”

The pioneering machine-learning models will provide product owners and CMOs with powerful real-world context signals to continuously optimize user experiences throughout the customer journey.

Felix Krause, Co-Founder & CPO said: “We believe the future of mobile apps lies in their ability to adapt to the real-world contexts of users. We are leading this transformation and delivering on our vision of establishing real-world context as the new gold standard in mobile app engagement to build better apps that users will love.”

Building the future of app engagement and retention

ContextSDK’s platform currently offers three core products: Context Insights, Context Decision, and Context Push, each targeting different aspects of mobile app engagement, from analytics and measurement to in-app decisions and push notifications. 

The company’s privacy-focused, on-device approach ensures that apps can personalize user experiences without having to collect intrusive data or face heavy infrastructure costs.

Speedinvest Partner Markus Lang said: “ContextSDK is addressing a critical gap in the mobile app ecosystem. Their technology provides a much-needed solution for apps to deliver personalized experiences without compromising user privacy. We are excited to partner with Dieter, Felix, and the entire ContextSDK team as they continue to innovate and lead in this space.”

Since its launch in August 2023, ContextSDK has processed over 10 billion events to train its machine-learning models. In 2025, the company will reach +40 billion processed events and plans to roll out its Context Platform and intuitive B2B SaaS platform in the US.

“We were impressed by the depth of ContextSDK’s vision and their ability to execute so quickly,” said David Meiborg, Partner at First Momentum Ventures. “Their approach to using real-world context as a proxy for user intent is not only innovative but also perfectly timed with the growing demand for privacy-first solutions in mobile app development.”

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About ContextSDK

ContextSDK is an early-stage startup that is transforming mobile app engagement by leveraging real-world user contexts. By utilizing advanced machine learning executed on device (Edge AI), ContextSDK allows apps to interpret physical signals from a user's environment to deliver personalized experiences without compromising privacy. Launched in August 2023, ContextSDK has quickly gained traction with its innovative technology, signing its first paying customers and processing billions of events to train its models. For more information, visit www.ContextSDK.com 

About Speedinvest

Speedinvest is a leading early-stage venture capital firm with more than €1 billion AuM and 30+ investors based in Berlin, London, Munich, Paris, and Vienna. Our dedicated sector-focused teams are the first to fund Europe's most innovative technology startups and our in-house operational experts are on hand to offer

founders ongoing support with growth, HR, market expansion, and more. Bitpanda, GoStudent, Wayflyer, Open, CoachHub, Schüttflix, TourRadar, Adverity, and TWAICE are among our portfolio of 300+ companies. Learn more at www.speedinvest.com 

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Statements from Founders and Investors:

Dieter Rappold, CEO of ContextSDK:

“The largest apps in the world have optimized their data, logic, and decision-making on the server side of things. It is obvious that combining that with Edge AI, enabled by machine learning executed on the device will lead to better app experiences, better retention, and ultimately monetization.”

Felix Krause, CPO of ContextSDK:

“We believe the future of mobile apps lies in their ability to adapt to the real-world contexts of users. We are leading this transformation and delivering on our vision of establishing real-world context as the new gold standard in mobile app engagement to build better apps that users will love.”

Markus Lang, Partner at Speedinvest:

“ContextSDK is addressing a critical gap in the mobile app ecosystem. Their technology provides a much-needed solution for apps to deliver personalized experiences without compromising user privacy. We are excited to partner with Dieter, Felix, and the entire ContextSDK team as they continue to innovate and lead in this space.”

‍David Meiborg, Partner at First Momentum Ventures:
“We were impressed by the depth of ContextSDK’s vision and their ability to execute so quickly. Their approach to using real-world context as a proxy for user intent is not only innovative but also perfectly timed with the growing demand for privacy-first solutions in mobile app development.”