Mobile apps and web products, built by the people you talk to.
TEOS IT designs, builds and launches React Native apps, web platforms and AI features — from the first sketch to the App Store. No account managers, no hand-offs.
One team for the app, the web and everything behind them.
Mobile apps
iOS and Android from one React Native codebase. We handle the store release, payments and push notifications too.
Web development
Fast websites, dashboards and SaaS platforms on Next.js and React — built to rank and easy to grow.
Backend & APIs
Databases, auth and APIs on Node.js, Supabase and Postgres. Secure by default, ready for real traffic.
AI development
LLM features, assistants and automations built into your product — useful, measurable, not a demo.
UI/UX design
User flows, interfaces and design systems in Figma, tested before a line of code is written.
Outsourcing
Senior React Native and web engineers who join your team, your stand-ups and your workflow.
Shipped, live and used.
You see progress every week.
- Step 1
Discovery
We map your goals, users and constraints, then agree on scope and budget.
- Step 2
Design
Flows and screens in Figma, validated with you before we build.
- Step 3
Build
Short cycles with a working preview build every week.
- Step 4
Ship
Store release, launch, monitoring — and we stay for what comes next.
“You talk to the person who writes your code.”
I’m Petro, founder of TEOS IT. I’ve spent the last years leading React Native teams and shipping apps for clients in Germany and Switzerland. I’m on every project — from the first call to the store release.
- Direct access, no middlemen
- You own all code and designs
- Weekly preview builds
- CET time zone, fluent English
“TEOS IT took our app from a rough concept to a polished product in the stores faster than we thought possible. They didn’t just execute tickets — they pushed back on the right things, owned the architecture and treated every screen like their own product.”
“We needed a fast, trustworthy platform that turns a complicated decision into five minutes of work. TEOS IT delivered a clean, performant web app and stayed pragmatic about scope the whole way through. Sharp communication, solid code, shipped on time.”
Have an app or product in mind?
Tell us where you are. In a free 30-minute call we’ll tell you honestly what it takes — time, cost and the best stack for it.