Steffen is a Founder and Developer based in Berlin Mitte, Germany. He builds software products and businesses. He is the founder of Peeranimo, a peer-to-peer community platform for people with unfulfilled dreams, and Orivela, a personal records vault for iOS. His work spans 10+ platforms, self-built and shipped to production. He thinks in systems and ships products end to end.

Start before you can.
Find the way while walking.
Something always works.

Hi, I'm Steffen. Curious by default, happiest when nothing exists yet, and rarely convinced that the obvious way is the right one.

Four apps of my own, plus platforms for people who came with an idea and no map.

CARPINCHOSOONJOIN WAITLIST

830 words.

Enough to never get switched to English.

Carpincho

Rioplatense Spanish

Open

Pitch me your idea. We'll take it apart together.

STEFFEN

Founder · Developer · Berlin Mitte

> whoami

Steffen. Berlin. Builder.

I think in systems,
act in products,
and ask every evening: “What if?”

Founder. Developer. Creative.

I don't build websites.
I build companies that scale.

[ Out-of-the-box thinker ][ Systems architect ][ Idea to launch ]
click around

./builds

Some of what
I've built.

A selection of 10+ projects.

←steffen@builds···
Shipped to App Store

Your records,
always at hand.

A personal records vault for iOS. Store insurance PDFs, subscription logins, lease agreements, and emergency contacts in one encrypted place — then ask for anything in plain language.

Platform
iOS & Android
Role
Solo Developer
Live
orivela.app
Timeline
Idea → App Store
Visit orivela.app →Work with me

🦜 Orivela

Good evening

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Recent

  • Passport

    Jun 27, 2026
    Documents

    Passport number: C3X8821K. Issued: June 2021. Expires: June 2031.

  • Adobe Creative Cloud

    Jun 27, 2026
    Finance

    Plan: Complete. Price: €89/month. Renewal: automatically every 15th.

  • Apartment — Emergency Contacts

    Jun 27, 2026
    Home

    Landlord: Thomas Müller, 0172 443 8821. Building manager: Hausverwaltung Bergmann.

🔍

Find anything in seconds

"Where's my car registration?" — asked, answered.

📄

Not just files. Everything.

Subscriptions, passport, lease, that paper in your drawer — all in one place.

🔒

Only you can read it

Encrypted on-device before it ever leaves your phone.

🤖

AI that knows your life

Ask in plain language. No folders, no scrolling, no guessing.

Architecture

AI requests never touch the client with secrets — the app calls a Supabase Edge Function, which holds the Anthropic API key server-side.

User → Expo App → Supabase Edge Function → Anthropic API → App

The Anthropic API key is never bundled in the app. All AI calls route through authenticated edge functions with rate limiting.

Expo / React NativeSupabaseClaude HaikuClaude VisionWebCrypto APIEAS BuildNext.jsVercelTypeScript
← All builds
AI PHOTO CALORIE TRACKER

Snap a photo.

Done in seconds.

Point. Shoot. Done. Kolibi reads every ingredient on your plate in seconds — no typing, no searching, no effort. Just: am I still on track today?

Platform
iOS & Android
Role
Solo Developer
Live
kolibi.app
Timeline
Idea → Launch
Visit kolibi.app →Work with me

The fastest calorie tracker you've ever used.

Step 1

Open. Snap.

3 seconds. That's all it takes to log a meal.

Step 2

Kolibi reads everything.

Every ingredient. Every gram. Automatically — no database, no typing.

Step 3

Know your day.

Remaining calories. Always visible. Always accurate.

← All builds
✦ A peer-to-peer community

Find people
who get it.

The people standing exactly where you are.
Building something. Changing something.
Becoming something.

  • 👥

    Same chapter

    People in the exact same moment of life.

  • ❤️

    Real connection

    Share. Support. Show up for each other.

  • ✦

    Your moment

    This is where your next chapter begins.

Join Peeranimo →
YMSD
250+ people are already waiting
YOU
Yuki

Yuki

Tokyo

🚀 Building a startup
Marcus

Marcus

Lagos

💼 Career change
Sofia

Sofia

Vienna

🌍 Moving abroad
Diego

Diego

Buenos Aires

🎨 Creative project
👥

People like you.

Worldwide.

./work-with-me

What's your
situation?

Click your case. I'll show you exactly how I can help.

>_ contact

Let's build
something real.

I'm available for freelance projects,
architecture work, and long-term
product partnerships.

  • → From idea to launch.

    Full product thinking, not just implementation.

  • → I architect systems, not just pages.

    Clean data models. Scalable from day one.

  • → Business thinking built in.

    Revenue models, retention, growth — not just features.

  • → 10+ platforms. Real products.

    Self-built and client projects across multiple industries.

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What are you building?