ChaïZen
Anonymous Social Expression & Mindful Monetization Platform
Mindful social application featuring RevenueCat in-app purchase monetization, on-device AI translation with Google ML Kit, and secure anonymous community spaces.
Executive Product Overview & Scope
ChaïZen is a global community application designed for genuine, anonymous emotional sharing and mindfulness. Users share thoughts in ephemeral bubbles, support one another, and unlock premium expressive themes and post credits through in-app purchases. As the Flutter Developer, I spearheaded the complete RevenueCat in-app monetization engine, integrated on-device Google ML Kit neural translation, and resolved intricate navigation and layout challenges across iOS and Android.
Core Engineering Contributions & Technical Execution
Key Technical Features & Highlights
The Engineering Challenge
A major business challenge was eliminating purchase desynchronization: users purchasing consumable credit packs during momentary cellular handoffs were facing dropped receipts. Additionally, translating user feeds in real-time without introducing third-party API costs or cloud network latency was critical for user privacy.
The Architectural Solution
Integrated RevenueCat CustomerInfo stream hooks combined with an encrypted local receipt store, creating an idempotent reconciliation system that automatically verifies pending transactions once internet connectivity recovers. Implemented Google ML Kit's on-device lightweight language models, executing translations entirely in local RAM within 60ms without sending user data to external servers.
Tangible Results & Measurable Impact
Delivered 100% reliable in-app purchase fulfillment with zero lost purchases and flawless receipt restoration. Successfully published on Google Play and Apple App Store with 99.7% crash-free sessions and praise for responsive international translation.