Apphud
Apphud needed to build a comprehensive subscription analytics platform that could track in-app purchases across iOS and Android with near-perfect accuracy. Existing solutions had up to 15% data discrepancy with App Store Connect, making revenue attribution unreliable for mobile marketers.
Industry
SaaS / Developer Tools
Client
Apphud
Duration
14 months
Project Information
Apphud is a B2B SaaS platform helping mobile app developers track subscription revenue, run A/B pricing experiments, and reduce churn. We built their core analytics engine, real-time event processing pipeline, SDK infrastructure for iOS/Android, and 20+ third-party integrations. The platform now serves 14,000+ apps, processes 150M+ events monthly, and tracks over $1B in total revenue with 99.9% accuracy.
Technologies Used
React.js
Node.js
Typescript
PostgreSQL
Redis
AWS
Swift
Kotlin
Team Composition
3 Full-Stack Developers
2 Mobile Developers
DevOps Engineer
Designer
Development Phases
Challenges and Solutions
99.9% Data Accuracy
App Store and Google Play receipt validation is complex with edge cases like grace periods, billing retries, and family sharing. We built a reconciliation engine that matches store data with 99.9% accuracy.
Project Metrics
14,000+
Apps Using Platform
150M+
Events Processed Monthly
$1B+
Total Revenue Tracked
99.9%
Data Accuracy
99.99%
Platform Uptime
20+
Third-Party Integrations
OUR CLIENTS SUCCESS STORIES
Reviews
6
Rating
5/5
At SagTech, we focus on making our clients' experiences as bright and rewarding as possible. Here's what some of our satisfied customers have to say about working with us:
“SagTech delivered our MVP in just 10 weeks. The quality exceeded our expectations and helped us secure our Series A funding.”
Project
FinTech Payment Platform
John Smith
CEO & Founder, TechStartup Inc.
CEO of Wisy
Yaroslav Gordov
Working with SagTech has been exceptional. They delivered our mobile app and admin dashboard ahead of schedule and exceeded all performance expectations. Their deep understanding of investment platforms and user experience resulted in significantly improved processing speeds.
Head of Product in Wisy
Eugene Prokhorov
Professionals with excellent knowledge of fintech and automated investments. The project was completed with high quality: a user-friendly mobile and web application, and a well-thought-out admin panel. The team quickly addressed all challenges, including payment integration. If you need a reliable IT partner with a deep understanding of technology, I highly recommend them!
CEO of Kwikwins
Sergei Chervyakov
Outstanding team that transformed our backend infrastructure completely. The optimization work resulted in dramatically faster response times and near-perfect uptime in production. Every milestone was delivered ahead of schedule with exceptional attention to detail.
CEO of Yotewo
Alexander Kazhemyakin
Rare to find contractors who genuinely understand modern web development. Their work doubled our search engine visibility and significantly improved site performance. The scalable architecture they built handles our growing user base perfectly, supporting thousands of daily active users.
CEO of BullArena
Andrej Ruckij
A professional team with a deep understanding of blockchain technologies and the Play-to-Earn mechanics. The project was executed at a high level, from MVP development to the integration of cryptocurrency operations. The optimization of the gameplay ensured stable real-time performance.
Advantages of Choosing Sagtech
Event-Driven Architecture
Built for scale from day one with Kafka, ClickHouse, and Redis. The system handles traffic spikes during app launches without degradation.
Developer-First SDK Design
Lightweight SDKs with clear documentation, sample apps, and migration guides. Integration takes hours, not weeks.
Store API Expertise
Deep understanding of App Store Server Notifications, Google Real-Time Developer Notifications, and receipt validation edge cases.
frequently asked questions
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