Barcelona, Spain

Lang

Kazushi Ishida — Solo Full-Stack Developer

The LLM is a component, not the answer.

I give a model the part it is genuinely better at, then keep what it returns as structured data — so search and aggregation stay deterministic.

About – Kazushi Ishida

Apps

Local news from everywhere — in your language, at your depth.

SiftCast

Global news, delivered in your language. Scan, translate, and dive deep into world events with AI.

Beyond rigid answers — language drills scored by LLM across 10 languages.

LinguaGym

Master 10 languages through dynamic drills. Get instant AI feedback on natural phrasing, grammar, and comprehension.

Fix only your weak points — while you speak.

LinguaCoach

Practice multilingual conversation with interactive AI. Get real-time grammar corrections and track your progress via a smart dashboard.

Find what's worth watching — and know it before you press play.

TubeRefine

AI-powered tagging and summarization for YouTube. Streamline your watchlist and conquer information overload.

SiftCast

Global news, delivered in your language. Scan, translate, and dive deep into world events with AI.

LinguaGym

Master 10 languages through dynamic drills. Get instant AI feedback on natural phrasing, grammar, and comprehension.

LinguaCoach

Practice multilingual conversation with interactive AI. Get real-time grammar corrections and track your progress via a smart dashboard.

TubeRefine

AI-powered tagging and summarization for YouTube. Streamline your watchlist and conquer information overload.