
A Thin Book on AI Agents
A technical book that demystifies AI agents with minimal code. Starting from a 14-line LLM call, you'll build a complete agent in just 72 lines.
- Gemini API
- Python
- SWE-bench 74%+
- PageIndex (RAG)

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A technical book that demystifies AI agents with minimal code. Starting from a 14-line LLM call, you'll build a complete agent in just 72 lines.

AI-powered English essay writing practice. Three modes — composition, correction, and scoring — covering university entrance exams, Eiken, TOEFL, and IELTS.

An iOS document scanner with no ads, no watermarks, and no login. Turn paper documents into PDFs and keep them stored locally.

An iPad-only PDF reader with a real-book two-page spread and instant AI translation or explanation of selected text. No ads, no login; your books stay on device.

Lost your location history? Your photos still remember. Rebuild a private timeline of the countries, cities and dates you visited from photo GPS metadata — all on-device.