Personal Projects

Independent products and tools I've built, focusing on AI, education, and cross-platform experiences with real-world traction.

Chitay Web

EdTech / AI

AI-powered web platform for Ukrainian standardized exam preparation (NMT/ZNO/ЄВІ). Focuses on discovery and structured learning through SEO-driven acquisition and AI-assisted content summarization.

Traction: ~30,000 monthly website visitors

Product & Engineering Highlights

  • Full-stack implementation using Next.js and Supabase for authentication and database management.
  • Integrated OpenAI API into educational workflows for automated content explanations and summarization.
  • Developed a subscription-based monetization model and gating system for premium content.
  • Optimized for SEO and performance to scale to 30,000 monthly organic visitors.

Tech Stack

Next.jsReactTypeScriptZustandSupabaseOpenAI APIPostHogSentry

Chitay Mobile App

EdTech / Mobile

Cross-platform mobile application providing an offline-first study experience for exam preparation. Built with a focus on retention through daily engagement and localized mobile features.

Traction: ~500 weekly active users, high retention through offline usage

Product & Engineering Highlights

  • Built an offline-first learning architecture to support students in low-connectivity environments.
  • Implemented a comprehensive mobile retention loop using push notifications and study reminders.
  • Integrated AdMob for ad-based monetization and In-App Purchases for premium feature access.
  • Maintained a mobile-first UI/UX optimized for quick study sessions and daily engagement.

Tech Stack

React NativeTypeScriptReact NavigationSupabasePush NotificationsIn-App PurchasesAdMobSentry