Hundred Core is a solo-developer studio in Seoul that leverages AI to build, ship, and scale consumer products at unprecedented speed. 12+ apps published across 12 languages.
"Hundred Core" means delivering the output of a hundred engineers through one person amplified by AI. We build consumer apps, AI services, and automated content systems from Seoul for the world.
Every product is built with AI at its core -- tarot reading, dream analysis, TRPG storytelling, and automated content generation.
Web (Next.js, React), mobile (Flutter), and mini-apps -- one codebase logic, multiple distribution channels.
Korean, English, Japanese, Chinese, Spanish, Portuguese, French, German, Vietnamese, Thai, Indonesian, and Arabic.
With our App Factory system, we go from idea to published app in 1-2 weeks, fully localized and automated.
"The future belongs to those who can leverage AI-- Hoyoung Kim, Founder
to build what used to take a team of 100."
A modern, serverless architecture powered by multiple AI models and cross-platform frameworks.
Claude, Gemini, and GPT orchestrated via OpenRouter. Applied to fortune-telling, dream analysis, TRPG narration, and content generation.
Flutter for mobile, Next.js/React for web, and Toss mini-apps. One business logic, three distribution channels.
Proprietary system for rapid app creation. Template-based generation with automatic 12-language localization and CI/CD deployment.
AI generates 16 SEO-optimized blog posts daily (8 Korean, 8 English) via GitHub Actions. Fully autonomous, 24/7 operation.
Vercel for edge functions, Supabase for database and auth, Firebase for mobile backends. Zero server maintenance.
AI Act compliant (AI-generated content labeling), privacy policy per app, GDPR-aware localization practices.
From AI-powered fortune reading to multiplayer TRPG -- consumer products designed for global audiences.
Three AI oracle personas -- Nox, Selene, and Nova -- deliver personalized tarot readings, birth chart analysis, dream interpretation, and compatibility checks. Available in 12 languages with a distinctive K-webtoon visual style.
An AI Game Master creates stories in real time as you explore a cat-themed fantasy world. Solo and multiplayer modes with community scenario sharing.
Scientific lucid dreaming program with AI coach Lumi. 14-week training, dream journal, reality check reminders.
AI-powered lottery number generation and analysis. Dream-based number picks, statistical analysis, and purchase history tracking.
Pet expense manager with donut charts, vaccination D-Day alerts, food supply tracking, and a scrapbook-style diary editor.
Real-time wage calculator and work log for freelancers and part-time workers.
Family medication management. Set reminders, track doses, and share schedules with loved ones.
Rent payment management for tenants. D-Day dashboard, payment stamps, deposit interest calculator.
AI-powered plant health diagnosis and personalized care guides with automatic watering reminders.
Full-stack developer specializing in Flutter, React, TypeScript, and AI/LLM integration. Built and shipped 12+ apps in 12 languages in under 3 months using AI-augmented development. Created the App Factory system for rapid product generation, and runs a fully automated blog network producing 16 SEO-optimized posts daily via GitHub Actions. Based in Seoul, building for the world.
Interested in collaboration, partnerships, or just want to say hello? Reach out anytime.