4Rooks

4Rooks

We Scale.

Why ROSA

Build the product.
Not the foundation.

Each product costs less than the last.

ROSA scales your software platform so the next device doesn't start from scratch.

We enable. You own the strategy.

ROSA builds your product the way you want. Your team, your decisions, your firmware.

Live product visibility, always.

Built to test in the cloud from day one. One link to know exactly where your device stands.

Secure by design.

Security tests and sound architecture baked in. Ready for CRA before it becomes a crisis.

ROSA is the foundation layer. We maintain it. You own the product.

Technical Approach

Three components. One platform.

ROSA Atelier

Where you build.

  • Covers all stages of product development
  • Built-in test automation and CI
  • Pre-configured devcontainer, ready from day one
ROSA Canvas

What you design on.

  • Platform architecture that stays stable across all devices and over time
  • Generates firmware code tailor-made for your product
ROSA Core

What it runs on.

  • Stable base across hardware platforms and operating systems
  • Ready-made building blocks: Matter, BLE, and many more
Business Model

Simple. Fixed. Aligned.

-75% cost vs. building in-house

Platform investment shared across all your products, not rebuilt per project.

Up-front
licence fee
one-time · fixed price

No overruns. If the platform causes a problem, we solve it. The price does not change.

Scales with
your success
aligned incentives · low per-unit share

Keeps upfront cost low. The more you ship, the more we both benefit. Fully aligned, shared upside.

Platform risk stays with us. You carry the product risk. Clear boundary, no surprises.

Proof

Built by engineers who've done this. Proven in production.

>95% code reuse across wildly different devices
85% speed-up vs. expert domain team
3 days to first PoC on your hardware
Markus Fischer
CEO & Founder
15+ years · automotive & embedded
Mercedes-Benz MBUX & App Support
Bringing platform learnings from automotive into IoT.
Markus Fischer
Sebastian Schüller
Sebastian Schüller
CTO
3 IoT products shipped to production
Built & led embedded platform teams
Distributed systems & AI-driven components
Next Steps

Let's make it concrete.

Your hardware, your challenge. See the benefits first-hand.

Step 1

Pick a project.

One device or platform challenge. Your hardware, your use case.

Step 2

Evaluation licence.

Full platform access. No long-term commitment.

Step 3

PoC in 3 days.

Working code on your hardware. See the benefits first-hand. Then decide.

The only model where you own the firmware, the platform cost is shared, and our incentives are structurally aligned with your success.