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Industries
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Cross-industry engineering experience across regulated and high-growth sectors.
All IndustriesSuccess Story
Screen Engagement Measurement for Mobile and Web Apps
Unified event tracking enables accurate engagement insights, dwell time analysis, and improved UX decisions.
Cross-platform tracking
delivers consistent screen engagement data.
Accurate
exit data enables actionable user behavior insights
Technologies
Swift
Kotlin
React Native
Web
Expertise
Mobile app development
Data analysis
Client Overview
Zalando
Zalando is one of Europe’s leading online retail platforms with 51 million active users across 25 markets. Headquartered in Berlin, Zalando specializes in fashion and lifestyle, managing a high-volume digital ecosystem with global reach.
Industries
Retail, E-commerce, Fashion
Headquarters
Berlin, Germany
Company size
10,000+ employees
Challenges
Inconsistent Tracking Limited Product Insights
Zalando lacked a unified way to measure how users interact with screens, making it difficult to understand engagement, identify drop-offs, and optimize user journeys.
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Let’s build a reliable tracking foundation for your digital products.
Cross-platform inconsistency
Different lifecycle models across iOS, Android, and Web made it difficult to standardize screen tracking and ensure consistent data.
Unreliable data quality
Invalid or malformed events propagated into analytics systems, reducing trust in reporting and increasing debugging effort.
Missing exit context
Basic exit signals lacked detail, preventing teams from understanding why users left screens or flows.
Pipeline complexity
New tracking events needed to integrate with existing GA4 and internal systems without disrupting current analytics workflows.
Have a Similar Problem?
Let’s build a reliable tracking foundation for your digital products.
Why They Chose Us
Proven Expertise in Cross-Platform Tracking
Zalando chose Zoolatech for its ability to implement consistent, high-quality tracking across platforms while aligning with existing analytics ecosystems.
Cross-platform instrumentation
Expertise in aligning iOS, Android, and Web tracking into a unified event framework with consistent data output.
Data quality by design
Validation logic embedded at the client level ensures clean, reliable data before it reaches analytics pipelines.
Zoolatech is a senior-heavy engineering firm with Silicon Valley roots and a Miami HQ, specializing in legacy modernization, system re-architecture, and AI deployment to drive long-term, compounding value.
2017
Year Founded
600+
Employees
96%
Client Satisfaction
Workflow
Structured Approach to Tracking Implementation
A phased approach ensured consistent rollout, data quality, and seamless integration across platforms.
Phase 1
Discovery and alignment
Defined unified event schema, tracking requirements, and platform-specific constraints.
Phase 2
Instrumentation design
Designed screen tracking logic accounting for lifecycle differences across mobile and web platforms.
Phase 3
Implementation
Deployed tracking across iOS, Android, and Web with consistent event structure and logic.
Phase 4
Validation and quality control
Implemented client-side validation to detect and prevent malformed events early.
Phase 5
Integration
Connected tracking outputs to GA4 and internal analytics systems without disrupting existing pipelines.
The unified tracking framework improved data accuracy, enabled actionable insights, and supported better product decisions.
Solution
Screen Engagement Event Framework
Zoolatech delivered a unified tracking system enabling accurate measurement of user engagement across all platforms.
Dwell time tracking
Calculates time spent on each screen, enabling deeper understanding of user engagement and attention.
Exit reason categorization
Captures structured exit reasons such as navigation, tab switching, or app backgrounding.
Unified event schema
Standardized tracking across iOS, Android, and Web creates a single source of truth for engagement data.
Results
From Limited Visibility to Actionable Insights
The new tracking framework enables product and marketing teams to make data-driven decisions based on accurate user behavior.
Engagement analytics
Dwell time metrics provide visibility into which screens retain attention and where users drop off.
Improved data quality
Invalid events are detected early, reducing debugging time and increasing trust in analytics.
Actionable insights
Detailed exit data enables targeted UX improvements and optimization of critical user flows.
Business Value
A Foundation for Continuous Experience Optimization
Zalando now has a scalable tracking infrastructure supporting advanced analytics and ongoing product improvements.
Product optimization
Teams can prioritize UX improvements based on real user behavior rather than assumptions.
Scalable analytics foundation
Screen-level data feeds into broader engagement models and future personalization initiatives.
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