Creative software for organizations that care.
Auxiliary IO is a small software company based in Berlin. We build accessible, well-crafted solutions for small and medium organizations—the kind of work we'd be proud to put our names on. If you're looking for honest collaboration and people who genuinely care about getting things right, we'd love to hear from you.
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What we do - Helping you build software that works.
Whether you need a web application, mobile app, or backend infrastructure, we're here to help figure out what makes sense for your project.
- From idea to product. We help turn your vision into working software. Whether it's a web app, mobile experience, or internal tool—we care about understanding the problem first, then building something that actually solves it.
- Built to last. Good software should age well. We write clean, tested code with thoughtful architecture—because cutting corners now means headaches later. Your codebase should be a foundation, not a liability.
- Works anywhere. Need your app to work offline or in low-connectivity environments? We specialize in offline-first architectures that sync seamlessly when you're back online—perfect for field work or unreliable networks.
- Honest collaboration. We'll tell you what's realistic and what's not. We believe in transparent communication, realistic timelines, and no surprises. You'll always know where things stand.
- Flexible engagement. Whether you need a full project build, extra hands on your team, or just some strategic guidance—we adapt to what works best for you. No rigid packages, just practical help.