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On-Device Context for

Mobile Intelligence

The data infrastructure layer that turns real-world device signals into decision-ready intelligence.

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Why now

A New Category of Data is Emerging

Every major shift in the data ecosystem has been driven by a new, previously inaccessible signal. The next frontier is directly on your users' phones.

analytics

Web Analytics

Unlocked the early internet economy

phonelink_ring

Mobile Attribution

Unblocked App Economy

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Cloud Warehouses

Unlocked modern analytics stack

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On-Device Signals

Unlocking real-world user context

Modern smartphones carry a rich, physics-based sensor suite - accelerometers, gyroscopes, device motion and ambient signals. These sensors describe the physical relationship between a human and their device in 3D space. Until now, this information has been difficult to access, interpret and apply in a consistent way for product and growth teams.

Infrastructure

The Layer That Unlocks Real-World Intelligence

ContextSDK is building the essential data infrastructure layer that collects, normalizes and makes on-device contextual signals available for the entire ecosystem.

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User Context Motion Orientation Accelerometer Gyroscope

Sensor Abstraction: We handle the complex physics engines, motion modeling and cross-device normalization so you don't have to.

Privacy-First: All processing happens on-device. No identity tracking, no cross-app fingerprinting - just physics-based truths.

Real-Time Decisions: Millisecond-level SDK performance for instant decisions at the moment of user interaction.

Clean Integration: A stable, standardized API layer that plugs into any part of your data pipeline.

Products

Powered by the same core layer

Each product is an expression of our infrastructure - purpose-built solutions that activate on-device intelligence for specific business outcomes.

Intelligent Timing

ContextDecision:

Trigger actions at the perfect moment by understanding user context in real-time. Optimize conversions, reduce friction and respect user attention.

+80% conversion uplift
‍→ View case study

Learn more

Smart Notifications

ContextPush:

Deliver push notifications when users are most receptive. Increase engagement while reducing notification fatigue and opt-outs.

Learn more

Signal Intelligence

Adtech Suite:

Enrich your ad targeting with privacy-safe contextual signals. Build high-value audiences without deprecated identifiers.
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Coming soon
Trusted Partners

What industry-leaders say

Eric Seufert
Independent Analyst & Investor

"ContextSDK and its assessment of real-world context adds a unique new data vector to close the loop on conversion to achieve 360 degree contextualization. This will advance the mental models of measurement across the mobile ecosystem."

Peter Steinberger
Founder of OpenClaw

"ContextSDK creates value for mobile app product owners from day 1, shedding light on insights such as the impact of real-world context on session length."

Aymeric Roffé
CEO BeReal

"With ContextSDK we address a crucial blindspot in our Analytics Setup: the real-world context of a user when using our app. For the first time we will have a 360 degree contextualized picture how our customers are using our app"

George Deglin
CEO OneSignal

"Our ContextSDK partnership enables us to have a compelling AI narrative when speaking with prospects. Many other approaches to AI in our market have limited value. But ContextSDK can actually drive meaningful impact on engagement and conversion rates."

Florian Gschwandtner
Former Founder & CEO of Runtastic

"For me this is a no-Brainer! As a product owner I'd love to learn more about the real-world contexts in which my users are using my apps - this will allow me to design better customer journeys."

1.500.000.000
Context events processed

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On-Device Intelligence?

Join the companies building the next generation of mobile experiences with real-world context.

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Get ready to explore how real-world context can transform apps. Stay tuned for our upcoming issues!
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The on-device data layer for mobile intelligence. Privacy-first contextual signals for the modern marketing stack.
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Founded by Felix Krause and Dieter Rappold.
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