
A puzzle kingdom for iPhone — slide bricks out through the doors of their own colour on packed boards, beat the clock and collect the crowns.
YEYGUN is a boutique advisory led by Ahmet Onur Yeygün, working with founders, boards and investors across fintech, crypto and media. Alongside client work, we design and ship our own apps and platforms.
Real products for real problems — four apps live on the App Store, three on the way, and two web platforms. Each one designed, built and operated by YEYGUN.

A puzzle kingdom for iPhone — slide bricks out through the doors of their own colour on packed boards, beat the clock and collect the crowns.

A companion for people with a fear of flying — tracks your flight minute by minute, forecasts turbulence before it hits and explains every cabin sound, even in airplane mode.

Calorie and macro tracking, personal training plans and an AI coach that reads your plate — plus boxing and Tabata timers with a voice coach in your ear.

A minimalist calm space for iOS — a single breathing circle on black, low lullaby-like melodies, haptics and 500+ hand-written quotes for the moments your mind won’t quiet down.

An AI movie and series picker — tell it your mood, how much time you have and which streaming services you use, and it picks tonight’s watch and shows exactly where it streams in your country.

A privacy-first quit-smoking companion that shows daily proof — money saved, body healing, life regained — with always-free craving tools and a 24-chapter audio guide.

A pocket game console of twelve original, instantly-playable mini games — pay once, fully offline, no ads, no accounts, no tracking.

AI-powered crypto trading signals with automated execution — real-time signals, auto-trade on OKX, Binance and BingX, and full performance tracking.
AI-based media monitoring and digital reputation platform. Search any name, brand or topic and get the latest news, social signals, a sentiment score and an executive summary in seconds.

We take a handful of outside ideas each year — strategy, design, build and launch, with the same team that ships our own products.
I’m Ahmet Onur Yeygün — an executive and founder with 25+ years across retail, media, automotive and fintech. I’ve built teams, run P&Ls, led exchanges and digital asset platforms, and sat on boards where governance and risk were not optional.
I focus on what survives reality: unit economics, execution, risk and governance. If something is not realistic, I will say it.
You work directly with me. No junior layers, no hand-offs.
A small number of engagements, retainer-based where it makes sense.
Direct access, quick feedback and measurable progress.
I ship my own products, so advice is grounded in doing.
Three areas where I add the most value. Engagements are scoped tightly, with clear next steps and no fluff.











Dubai is home base. Clients and products span Türkiye, the Gulf and Europe — with a global user base for our apps.
Share one or two paragraphs about your situation and the decision you need to make in the next 6–12 months. I reply personally.