About 4RTY / An independent product studio
Curiousabout whatis possible.
4RTY is where ideas are researched, designed and developed into digital products. Sometimes that starts as an experiment. Sometimes with a concrete question from a founder.
The studio
Not every ideaneeds to bea company yet.
You need room to try, test and learn. Only when an idea adds something real does it earn the next step.
Who 4RTY is
A product studiowith its own direction.
4RTY researches, designs and builds digital products — for founders, teams and for our own portfolio. Clear product direction. Honest craft. Ownership from first signal through go-live.
What we believe
Product first.Then the rest.
- 01Start with a real problem.Technology matters when it solves something for a real user.
- 02Make ideas tangible.Less endless talk about possibilities — more focused design and testing.
- 03Build small enough to learn.A first version should be useful, not complete.
- 04Take ownership.Engineering, product choices, quality and go-live belong together.
- 05Stay curious.Treat feedback as a reason to improve the product.
The studio
One founder.A direct line.
4RTY is an independent product studio led by Glenn Kuipers. You work with the person who shapes scope, design and build — from first idea through launch.
Glenn Kuipers
Founder
From idea to our own products
Not only words.Also our own products.
We build apps, tools and digital experiences ourselves. Each product has its own context, identity and technical choices.
- MemorialvideoBring memories together into a personal film.
- WeerSportWhat is your best sport moment?
- SaveSafeImportant purchases. All in one place.
- SpotTalesMemories get a place.
- SnapSnipTurn shared moments into a film together.
- RevealRoundFrom friend group to live gameshow.
- KoopKookConnect planning, groceries and cooking.
Portfolio and maturity status are documented on each product story.
View all productsWorking with the studio
A partner whobuilds too.
We work with founders and teams on product ideas, software and digital experiences — with clear agreements on what we research, what we build and how we move forward together.
Quick answers
What is 4RTY?
4RTY is an independent product studio — where we build apps, software and new technology.
What has 4RTY built?
Seven product stories — Memorialvideo, WeerSport, SaveSafe, SpotTales, SnapSnip, RevealRound and KoopKook — all currently Exploring, with authentic media deferred until approved.
Does 4RTY run as its own studio?
Yes. 4RTY runs as its own studio with its own products and roadmap.
How do I get in touch?
Email info@4rty.com, or find us on LinkedIn and X.
Got an idea?
Then we'd like to meet you.
Tell us what you want to build. A rough sketch is enough.
No fictional team photos, vanity metrics or invented client logos.