We're an app studio. We design, build, and publish our own apps — and we bring the same team and the same standards to products for early-stage teams, usually in your users' hands within 8 weeks. Full-stack, European time zone.
↓Services
End-to-end product work for client teams.
Mobile MVP Development
React Native iOS + Android. 8-12 week delivery, full design-to-launch.
Backend & API
Node.js / TypeScript backends, database design, third-party integrations, deployment.
Full-Stack Web Apps
Next.js + Postgres web applications, admin panels, dashboards.
Our Apps
Products we design, build, and ship to the stores under our own name. Client work gets the same team and the same standards.
ViewMET
The Met's collection, in your pocket
An iOS and Android app for exploring the Metropolitan Museum of Art's full catalog — 400,000+ works in high resolution, with curator notes, browsing by department, search by artist, period, medium, or culture, and collections you save yourself.
App Store ↗ / Google Play ↗
Scribble
Doodle on photos, straight to your friends' Home Screens
An iOS app for drawing on photos and sending them to friends — snap or pick a photo, scribble on it with pens, markers, and shapes, and send it in a tap. It shows up right on their Home Screen widget, no need to open the app. Daily streaks keep it going, and only friends can send you scribbles.
heyscribble.com ↗
Hound
A daily behavior plan built for your dog
An iOS app that turns a few questions about your dog into a day-by-day behavior plan — for separation anxiety, barking, destruction, pulling on the lead, reactivity, and extra weight. Built on established desensitization and counter-conditioning protocols, with one short exercise a day and your progress tracked as you go.
houndapp.xyz ↗
Şehirli
Verified incidents in your neighborhood
An iOS and Android app that puts what people see on a live map — accidents, fires, floods, earthquakes, and more, across Turkey. When a second person confirms an incident, an alert goes only to people who chose that area. Official AFAD earthquake data is on the map too, and whoever reports stays anonymous.
sehirli.app ↗Case Studies
Mesh — Frontend, mobile, and product engineering for a Budapest builder community ↗Problem: Mesh needed flexible engineering capacity across web frontends, mobile apps, and new product features as their products evolved.
Solution: Delivered multiple projects spanning React/Next.js frontends, React Native mobile apps, and a few OpenAI-backed features. Stack: React, Next.js, React Native, OpenAI APIs.
Outcome: Ongoing engineering partnership across multiple product surfaces.
Student Tutoring — Peer-to-peer tutoring marketplace for university students ↗Problem: Connecting upper-year students with lower-year students seeking tutoring required a marketplace with booking, payments, and scheduling.
Solution: Built an end-to-end marketplace with tutor profiles, class browsing, booking flow, Stripe payments, and multi-language support (EN/HU). Stack: Next.js, Postgres, Stripe.
Outcome: 50+ students helped, 4.9 average rating.
AutoFlow — AI-powered YouTube content automation platform ↗Problem: Managing multiple YouTube channels required coordinating freelancers across 7 content stages — research, scripts, voice, visuals, assembly, thumbnails, upload.
Solution: Built a complete pipeline automation platform with AI integration at every stage. Single dashboard for managing multiple channels, role-based access for team members. Stack: Next.js, Postgres, OpenAI integration, video processing pipeline.
Outcome: Reduces a week of coordination work to a pipeline monitored twice a day.
NeuroLens — AI-powered brain hemorrhage detection for emergency radiology ↗Problem: In acute care a brain CT has to be read in minutes. Emergency physicians and radiologists needed suspected hemorrhages surfaced the moment a scan arrives — a second set of eyes, not another step in the workflow.
Solution: Built the product end to end — CT ingestion, the detection pipeline that flags suspected hemorrhages, and the clinician-facing web application for reviewing and triaging results.
Outcome: Shipped and in use by emergency and radiology teams.
Process
Step 1 — Discovery (Week 1)
30-minute discovery call. Scope, timeline, and approach finalized within 48 hours. Detailed proposal delivered.
Step 2 — Build (Weeks 2-7)
Backend first, then mobile UI. Weekly demos. Linear/Notion access for full transparency. Async-first communication.
Step 3 — Polish & Launch (Week 8)
QA, performance audit, App Store + Play Store submission, analytics setup.
Step 4 — Post-Launch Support (30 days)
Bug fixes, performance optimizations, first feature requests from real users.
About
Duna Yazılım is an app studio based in Budapest and Istanbul. We build our own apps and publish them under our own name, and we build products for early-stage B2B SaaS companies — design, engineering, and launch handled end to end.
Running our own apps means we live with the same decisions we ask clients to make: what ships first, what earns a place on the home screen, what actually gets used after week one. We've delivered 10+ products for founders across Europe and the US, and the work stays hands-on and senior throughout — direct communication, progress you can see every week, and a product built to learn from real users, not just to demo well.
We work on Central European time (CET) and are available for in-person meetings across Europe, the Middle East, Canada, and the US.
Ready to ship?