Developed the mobile (frontend) of the AI-powered astrology app, Astromatik, from scratch as the sole developer, and actively contributed to the product's R&D processes conducted at Biruni Teknopark. Published it on the App Store and Google Play, managing all end-to-end mobile processes for a product that scaled to 15,000+ DAU and 500,000+ total downloads. Architected the application from the ground up using Clean Architecture and Bloc/Cubit. Integrated multiple LLMs (OpenAI, DeepSeek, Gemini) and implemented a real-time chat interface supported by SSE streaming. Built the monetization infrastructure from scratch, including subscription/coin-based In-App Purchases (IAP) and AdMob. Successfully integrated the Firebase ecosystem, Shorebird (OTA updates), multi-language localization, and social logins (SSO).…Developed the mobile (frontend) of the AI-powered astrology app, Astromatik, from scratch as the sole developer, and actively contributed to the product's R&D processes conducted at Biruni Teknopark. Published it on the App Store and Google Play, managing all end-to-end mobile processes for a product that scaled to 15,000+ DAU and 500,000+ total downloads. Architected the application from the ground up using Clean Architecture and Bloc/Cubit. Integrated multiple LLMs (OpenAI, DeepSeek, Gemini) and implemented a real-time chat interface supported by SSE streaming. Built the monetization infrastructure from scratch, including subscription/coin-based In-App Purchases (IAP) and AdMob. Successfully integrated the Firebase ecosystem, Shorebird (OTA updates), multi-language localization, and social logins (SSO).WWWW…