25 years of delivering
high‑converting websites & apps
Leverage our cross-industry extensive experience from working with both Fortune500 brands & startups.






























Our design for KupFundusz investment platform made their conversion rates skyrocket
Making the all-in-one shopping app smart, beautiful and easy to use on the go
The redesigned Storyplanet app connects travellers and guides around the world
Why we make a difference
25 years of cross-industry experience in product design
We did over 400 projects for dozens of industries from banking, TV channels all the way to pregnancy trackers.
0%
Most websites convert poorly
(bad UI, UX & SEO practices, missed product potential)
0%
Squareblack designs for conversion
(heuristic analysis based + regular optimization)
Conversion-centric design, that turns visitors into clients
Close more clients & grow business with highly optimized design, tailored to drive purchases and engagement.
Long term optimization strategy & planning
We don’t just design. We plan ahead on how to test, refine and further optimize the product so it continues growing.
Design decisions.
Explained.
All the design decisions are explained in a PDF document when you receive the first project draft.
People love working with us
Cory Miller
Kit.com
Outstanding work.
We’re impressed of the quality of their designs and quick response times. The team always responded within hours whenever we need changes to be made on the prototype itself.
Chris Current
CEO of Agent First
Chris Lawrence
Swap.fm
The Squareblack team was open minded and resolved every issue quickly.
Our website received great feedback & the conversion rate has increased. Everything was delivered on time!
Monika Starega
Head of Marketing at VIACOM
The team was very creative and provided us with a very high quality outcome of their work. They responded quickly to our remarks and proved to be focused on details.
We consider them as professionals.
Tomasz Sienicki
CEO of Prown, Digital Twins
Dorota Pietrzak
Analizy Online
The Squareblack team was insightful and I had an excellent experience working with them.
The team were able to deliver something fast that also looked good. They’re responsive and they performed very well.
Isabella Sobieski
Head of Marketing at Nickelodeon
Charlie Sumner
Wholesale Central
We’ve found that Squareblack is truly a result-driven partner.
The team impressed us with their flexibility. They provide good value and quick response to changes in the project.
Dorota Pietrzak
Head of Marketing at Analizy.pl
The quality and speed of the team’s work were impressive.
The workflow between our teams was very effective and we’re happy with the results.
Rafał Młodzki
CEO of Photoaid
The Squareblack team was knowledgeable, experienced, responsive, prompt and always provided full explanation.
The conversion rate on our forms has increased, which was the main goal of our website redesign.
Krzysztof Ogniewski
CEO at Elevato
Squareblack added great value with their insight into current trends and protocols. The team became a key partner in achieving our outcome.
The level of communication and quality of work left nothing to be desired.
Ryan Dewhurst
CEO of WPScan
Curious on how we couldcan enhance the conversion & quality of your product?
We’re available to talk
Or write to us at hello@squareblack.com
Our clients 50+

Multiple web campaigns for Viacom subbrands in over 12 European markets.

Two separate app designs for Oriflame resellers and customers for iOS and Android.

Multiple promo apps for new Samsung Galaxy Release events in Canada.

Campaign websites and engagement apps for stand-up comedy shows.

One of FxPro landing page designs, audit and annotations on how to grow the brand.

Vodafone customer support app for iOS, Android and Blackberry phones.

Official Litecoin mobile app wallet design, website and promo materials.

Visual evaluation of one of the hotel booking apps in glassmorphic style.

Building the webpages around the most recent convertkit to kit rebranding.

Design and game ideas for kids around the candy brands. Interactive websites.

Full design (1800+ screens) of a whitelabel content streaming service for multiple platforms.

Mobile app design for a subbrand of TR for iOS, Android and web view.

Over 40 screens of a customer service app/portal redesign for the telecom.

Renault Driver School website, invite templates and marketing materials.

Marketing websites and materials for upcoming shows and movies.

Decathlon rent redesign and flow changes for desktop and mobile breakpoints.
Book a design sprint or audit
Product design
$10000/ sprint
One single sprint is enough for a Landing Page design. If you have a bigger project or want a partnership, the amount of sprints needed is estimated individually.
One-time audit
$2500
We look at your product screenshots or recorded flows and create a report based on heuristic evaluation and our unique experience.
Bonus:
Product exposure
Bonus: Product exposure
After the product launches, you can get extra publicity via our social media channels. At no extra cost.
For select projects Michal will do a case study on YouTube, X and Medium reaching a combined group of over 370,000 people to boost the awareness of your business.
More information
Hello, it’s Michal 👋
Product designer, university teacher (IDF, SWPS), writer and conference speaker with vast 25+ years of industry experience (since 1998). Michal has worked on projects for global brands like Orange, Samsung, Nestle, BMW, Renault, mBank, Seachange, Thomson Reuters and many emerging startups.
He shares his design knowledge at his popular YouTube channel, writes articles on Medium, created over 20 design courses and runs a Design Academy. His learning materials inspired over 200,000 designers. He also coined the terms Neumorphism and Glassmorphism.
Hello, I’m Diane 👋
Product designer with 15+ years of industry experience and strong fintech background. Through the years, Diana was responsible for various redesigns, rebrandings and usability upgrades for many noticeable polish and international clients,including Viacom, Booking Holdings, Analizy.pl, Payback, Paypo, Sage, Decathlon, Wolters Kluwer, Oriflame and more.
Who will I be working with?
You will either work with Michal or Diana - designers with over 20 years of experience. One of us will do most of the work, but we brainstorm all the major ideas together. We do not outsource design work to anyone else, like most companies do. This is also why we often have a waiting list for projects.
What differentiates you from other companies?
We worked on over 500 products from practically every category. From financial portals and banking, all the way to mobile games and pregnancy trackers. That experience, combined with our unique methods (typeframing, hierarchy strips etc.) means we don’t just “make pretty pixels”. We work on a project in a way for it to meet your business goals and the final, beautiful UI is just a cherry on top. It has to work and make you money first. That’s also why for most projects we provide post-launch strategy on what you can tweak, test and optimize later to continue growing.
How can I benefit from working with you?
You have access to very experienced designers. We worked on practically every product category - from financial portals, through medical, banking, lifestyle, art, IoT devices and more. We worked on over 500 different apps and websites already and that experience allows us to guide you to a better design outcome faster.
Are you suitable for my business?
We work with a wide range of companies - from Fortune500 all the way to single-founder startups.
How do we start and how your process looks?
We adjust the design process to fit and match each client needs. We start with finding out what the business needs and looking at past data if there’s any. This can include analytics, user comments or visual analytics recordings. Based on that we usually prepare a roadmap and plan to achieve the best result in the shortest time.
We often start with a typeframe to get the initial flows down. Most of the iterations are happening on that stage. The final, beautiful, high-fidelity design comes once we have a full plan on how the website or app will achieve the goals it had set to achieve. That’s the only way to ensure it won’t just look beautiful, but also exceed its business goals.
What is a design sprint?
Our design sprints are outcome based. They range from 2-3 weeks, depending on the complexity of the project and usually include a typeframing part and a high-fidelity design part. The typeframing part also consists of research and a small audit, so that we can make the right decisions in the design phase.
A typical single sprint is often enough to complete one, full Landing Page design for desktops and phones. Or a big part of a mobile app.
I have a designer/I don’t have a designer
We often work with companies that already have a designer or a design team. In that case we focus on the most complex tasks and guiding the in-house design team. In many companies without a designer we work for a couple of months to get the product going and then recommend an in-house, guided by us designer and decrease the number of our own hours to mostly consulting related tasks.
Can you also code the project for me?
We are not a software house, but we can code Landing Pages and simple web apps using React (Astro) and NextJS. A coding spring (2 weeks) is $4000.
How does the communication look like?
We create a shared Slack for daily communication. All project comms are handled through comments in our design software. We avoid calls because they break us out of the design flow - it’s simply less efficient. This is why after the first, introductory call, any other call is counted as twice the number of hours it took. We prefer to design in that time.
More questions? hello@squareblack.com
Let’s make the most out of your product
Leverage our cross-industry experience from working with both Fortune500 brands & emerging startups.
We’re available to talk
Or write to us at hello@squareblack.com