A one-person holding company designing, building and shipping premium SaaS — edge-first, AI-native, zero templates. Eleven products, one nucleus.
The latest from Kaya Core — a competitive language-learning app built native for mobile. Five courses, six exercise types, real-time multiplayer duels on Durable Objects, and Whisper-powered speech recognition. Coming to the App Store, then Google Play.
Invoicing for Dutch freelancers without the 2013 UX. Stripe Connect payments, recurring contracts, client CRM, and branded PDFs that don't look like Word templates.
A RAG-powered support widget you drop into any site with one line. Voice transcription via Whisper, knowledge-base grounding, industry templates, and multilingual out of the box.
A growth studio for 𝕏 — AI generates on-brand content, smart scheduler finds the prime posting window, and a Chrome extension handles strategic co-op engagement without touching your keyboard.
The resume builder that respects your time. Real-time preview, multiple typographic templates, instant PDF — no sign-up, no dark patterns, no upsell.
An AI music studio that turns lyrics into mastered tracks. Studio-grade WAV (24-bit / 48kHz), artist profiles, album management, achievements, and an R2-backed audio engine.
A non-custodial Cardano launchpad for creators — Plutus on-demand sales, IPFS art, CIP-25 metadata, EU-compliant. Flat 2 ADA fee. The studio-grade alternative.
A brand-handle claim kit: live availability across X, Instagram, TikTok, YouTube, GitHub, domains — plus a Chrome extension that fills signup forms with secure generated passwords, synced to one inbox.
A staffing-agency platform with job listings, candidate applications, and full company branding for the Dutch flex-work sector.
Service overviews, client onboarding and a partner portal for a financial-services company that needed more than a static brochure.
A real-estate site for Zuid-Holland with automated listing scraping, gallery-grade image management on R2, and a property inventory that keeps itself current.
I'm Cihat Kaya. Kaya Core is my holding company — a one-person operation that designs, builds and ships premium software end-to-end. The latest is Frayvio, a mobile language-learning app coming to the App Store, then Google Play. Six SaaS products live, one launching, three client sites in the wild. No templates, no shortcuts, no outsourced code.
The stack is edge-first — Cloudflare Workers, D1, Pages, R2 — paired with AI APIs that actually work. When I'm not shipping, I'm raising my son Matteo and exploring the intersection of AI and entrepreneurship.