Expert UX support, without hiring in-house.

Great products evolve. Our retainer keeps your UX sharp, modern, and friction-free, month after month.

Starting at €4,000

For teams that value consistent quality and stress-free UX evolution.

UX/UI Improvements

Continuous enhancements based on user insights.

Proactive Iterations

We spot opportunities before they become issues.

Strategic Guidance

Monthly planning sessions to ensure your product stays ahead.

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collab

Who we work with

You've got a product to build, and it should feel effortless. If it doesn’t, we’ll fix it.

Early‑Stage Founders

Big idea? Let's make it real. We’ll build a working MVP with low-code, so you can test and pitch.

Startups

Users dropping off? We fix friction points so they stay longer, convert faster, and love using your product.

Growing Companies

Scaling shouldn’t be a headache. We help keep your UX smooth, simple, and ready for what’s next.

results

Redefined products

We don’t just make things look good. We make them work better, faster, and smarter.

Investor-Ready MVP

Helped a startup build and demo an MVP that wowed investors and secured early buy-in.

Pet Longevity Platform

Completely revamped a longevity app, helping pet parents extend their pets’ lives worldwide.

"The team at 23harmony are not just superb designers but also product experts, ensuring a meticulously planned user experience. We highly recommend them to startups or companies looking for amazing, flexible design solutions."

Matt Keyes
COO at MyPetGo

"We demoed the MVP in our recent board meeting to the investors & advisors last week and received great feedback for it! Everyone was really impressed about the tool, which has been created in such a short time. These credits go all to you for the design!"

Schirin Yazgan
Head of Product at XO Life

Internal Tool → SaaS

Transformed an internal tool into a powerhouse SaaS suite — built in record time.

UX for Growth

Simplified a growing startup's UX, increasing activation rates and reducing drop-offs.

benefits

Why work with us?

We keep things simple: clear processes, fast iterations, and designs that work.

Boutique Approach

We work with only a few clients at a time for a truly personalized experience.

Proven methods

We share our own builds publicly. See what works in real time.

Seamless collaboration

From idea to launch and beyond, we stay by your side.

AI‑Enhanced Prototyping

Faster, smarter, and built for modern product needs.

How exactly does the retainer work?

Simple: You reserve ongoing monthly design and UX support. Each month, we tackle your highest-priority tasks, ensuring continuous product evolution.

How quickly can you address our product needs?

Very quickly. Our retainers are structured to ensure we always have capacity to address your product improvements within days, not weeks.

Is there a minimum commitment period?

We typically recommend at least 3 months, but retainers can be customized to fit your product and team needs.

What kind of work is included in a retainer?

Everything from UX improvements and design iterations, to user testing, new features, and strategic product planning. All tailored each month to your goals.

Ready to scale your product to new heights?

If world-class design and meticulous attention to every detail is what you're looking for, then you're in the right place.

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