A timber terrace above a rocky coastline at golden hour; an open laptop on the table, ocean and sunset behind

SOFTWARE ENGINEER · EDUCATOR · ENTREPRENEUR

I build software, systems and digital products.

View selected work

About

I’m Marc Fenz.

I build and run software, and teach programming and business informatics. I graduated from Graz University of Technology with a Master of Science degree. My background is in software engineering and management.

Some of my work starts with an idea of my own. Some starts with a customer who needs something built. I take it from that first conversation through development, deployment and day-to-day operation.

Portrait of Marc Fenz

Selected work

Expense Hunter

Personal Finance · Income & Expense Tracker

Track income and spending, manage shared finances and keep accounts in different currencies. Enter transactions by hand or use AI-assisted importing.

My own product, from the original idea through development and deployment.

Available on iOS and the web.

Expense Hunter displayed on a phone beside a plant and a sunlit room

Focused Capitalist

Net-Worth Tracker

Keep assets, debts and investments in one place. Monthly snapshots show how your net worth changes over time.

My own product, from the original idea through development and deployment.

Focused Capitalist net-worth dashboard displayed on a laptop

Entrepreneurship Expert

Entrepreneurship education

Students at Austrian Entrepreneurship Schools record activities and collect points toward their Entrepreneurship Expert certificate. Teachers review and verify their work.

Contract work. The client brought the idea; I handled the specification, development and deployment, and continue to run the platform.

Entrepreneurship Expert landing page showing students documenting their activities

Keepling

A weekly photo journal

An iOS app for taking one photo a week throughout your child’s first years. Keepling turns them into a timelapse you can watch back.

My own product, from the original idea through development and deployment.

Currently in private beta.

Keepling project mark: a sleeping child surrounded by blossoms

Working together

How I can help.

I’m open to software projects, practical AI work and collaborations around money and personal freedom.

Software for your business

Need a customer platform, an internal tool or a custom application? I can help you work out what it needs to do, build it and keep it running. The Entrepreneurship Expert certificate platform is one example of my work.

AI in the day-to-day work

I’d like to spend a few days with your team, see how the work gets done and find out where automation could help. That might mean less copying between systems, less paperwork or fewer repetitive steps. Then I can build and put those improvements into use.

Money and personal freedom

I’m building Expense Hunter and Focused Capitalist, and I’m interested in working with people who care about helping others understand their money and have more choice over how they live. If you’re working on something in that space, I’d like to hear about it.

Let’s talk

Now

Graz, Austria

What I’m working on.

A few things I’m spending a lot of time on right now.

  1. BUILDING

    Personal finance

    I’ve tracked my money for more than 15 years. Not to stick to a budget, but to understand where I stand and how my decisions affect the long term.

    I’m building tools around that idea: better visibility, better decisions, and ultimately more freedom to choose what comes next.

  2. Exploring & applying

    Industry AI adoption

    Bringing AI into real products, systems and workflows. Exploring where it becomes useful in everyday work.

    • Products
    • Systems
    • Workflows
  3. Teaching & sharing

    Educator

    Programming, business informatics and applied technology. Connecting what I build with what I teach.

    • Programming
    • Business informatics

Let’s talk

Tell me what you’re working on and where you could use a hand.