Custom App & Game Development

Hi, I'm Marc. I’m a solo developer with over 15 years of experience building cross-platform software. I focus on mobile-first apps and small games, but I can deliver on most platforms and scopes, depending on your needs.

I handle every part of the process myself — from UI and backend infrastructure to asset implementation and app store deployment — and I do it without overcomplicating things.

What I Offer

Fast turnaround
Most first prototypes are delivered within 1–2 months, depending on complexity. I work fast, and I stay on task.

Flexible development
I stay in close contact during development. If you need changes, we’ll talk about them, and I’ll adapt as long as the requests make sense. Bigger changes may increase cost or time, but I’ll always be upfront about that.

Full-stack capabilities
I handle both frontend and backend:

• Gameplay

• UI, menus, and in-app flow

• Login systems (Google, etc.)

• Cloud functions and player data

• Ad & IAP integration

• Analytics and reporting

Design and assets
I’ll work with you on layout and interface design. I can also create simple visuals in-house. If we need outside assets, I’ll help find them — but you cover the external costs.

Transparent pricing
You’ll get a one-time price based on your project. If scope changes, so does the price — but never without discussion first.
Can’t pay all at once? Monthly payment options are available.

Post-launch maintenance
I include 3 months of free maintenance:

• Bug fixes

• Minor tweaks

• Dependency updates

• Monthly analytics summaries

Ongoing support is available afterward at a fair rate.

Why Work With Me?

You get the full package: code, design, backend, polish, and communication — all from one person. No team hand-offs, no “we’ll get back to you,” and no need to repeat yourself.

If you’re looking for someone experienced who can build your app or game from start to finish and give you honest, reliable service the whole way through, you’re in the right place.

Let’s build something.
Get in touch if you want to discuss a project.

email: marcwerk.software@gmail.com
LinkedIn: https://www.linkedin.com/in/marc-carstensen-3819a5346/
or DM me on here.