Drive revenue growth with the first context-aware optimization tool
ContextSDK offers optimized app monetization by using users’ real-time activity to determine the best moment for in-app conversions.
Felix Krause
Founder of ContextSDK
Boost revenue with better user experiences
In today's competitive landscape, applications need to find innovative solutions to thrive, as traditional methods often fall short.
Ensure apps adapt intelligently, be it during a commute or winding down for the night. Determine the perfect time to convert your users.
ContextSDK offers real-time user context, revolutionizing app experiences to adapt intelligently to users' surroundings—a true paradigm shift.
Quick setup
Access to valuable new data
Competitive advantage

The first context-aware revenue tool
Move the needle post-installation by adapting in-app action to your user’s individual real-time activity.
Real results, real impact
Discover the power of hyper-personalization. ContextSDK has already processed over 500 million events, resulting in a remarkable 51% lift in conversion rates. It's not just a tool; it's a game-changer for your app's monetization strategy. With ContextSDK, you can finally unlock the full potential of your user base.
Data-driven decisions
ContextSDK leverages machine learning to provide valuable insights into how user context impacts in-app conversion. Say goodbye to guesswork; data powers your decisions.
Concerned about privacy?
So are we. ContextSDK leverages on-device machine learning, respecting user privacy while delivering customized experiences. No more sacrificing performance for personalization. We've got the perfect balance.
Spread the word
Enthusiastic about integrating ContextSDK into your existing apps? Find out what your Heads of Product and iOS developers think! Share the link to our landing pages with compelling reasons why ContextSDK improves app experiences.
For Developers
Let your iOS developers know how ContextSDK will make their lives easier and increase user satisfaction while keeping the integrity of the app intact.
For Heads of Product
Show your Head of Product why ContextSDK is a valuable addition to your existing toolkit, boosting apps’ engagement and revenue.
No PII, ever
We leverage a unique new approach, through on-device processing, no additional network requests, and never identifying a person, or device, ContextSDK is the best solution to significantly improve your app, while fully preserving the user's privacy, and complying with all privacy laws.
ContextSDK never generates, stores, or uses any Personal Identifiable Information (PII), therefore being fully exempt from most new privacy laws.
Enhanced security with on-premise data control
For large enterprises with highly sensitive data, we provide an on-premise solution. Your data remains securely within your existing infrastructure, giving you full control and peace of mind.
Meet the Masters of Innovation
Felix Krause, the visionary founder of fastlane.tools, and Dieter Rappold, a seasoned serial entrepreneur, are driving forces in the tech world. Felix's pioneering work, including the game-changing fastlane, has revolutionized iOS development, while Dieter's extensive experience in digital marketing and tech startups showcases his strategic prowess.
Their combined expertise is a testament to their competence and authority in the field, making them invaluable assets in the realm of technology and innovation.

Start accessing unique data to move ahead
Don’t miss out on this opportunity to gain a competitive advantage by using an optimization tool that determines the best time to act and improve conversion.