ClosWitYou Have An Idea.
We Turn It Into A Business.
We partner with founders to turn raw ideas into launched, fundable products — in under 12 months, for less than €10,000. Strategy, design, and engineering, all handled so you don't have to figure it out alone.
Do you have an idea for an app, platform, or product you can't stop thinking about?
You can picture exactly how it should work.
But turning it into real, working software feels like a different language entirely.
The problem was never your vision. It's that no one ever showed you how to turn it into software without learning to code yourself.
You're sure this idea could be something big — and every day it stays just an idea is a day someone else could build it first. That's not paranoia; it happens more often than you'd think.
That's exactly where we come in.
ClosWit is the technical team behind your idea. We handle the strategy, design, and engineering, and turn it into a real, working product you can put in front of real users — and grow into a lasting business.
You don't have to reveal your idea to get started — just bring the ambition.
Trusted by founders worldwide
0+
Happy Clients Worldwide
0+
Years Building Startups
0+
Projects Delivered
5/5
Average Client Rating
Founders Who Trusted Us With Their Vision
Real conversations with founders about what it's like partnering with ClosWit.
Placeholder Name
Placeholder Company — Placeholder Country
Placeholder Name
Placeholder Company — Placeholder Country
Placeholder Name
Placeholder Company — Placeholder Country
Why Founders Choose ClosWit
Everything we do is designed around one goal — helping you launch with confidence, not confusion.
Transparent Pricing
Clear, fixed-scope quotes with no hidden fees — you always know what you're paying for.
Weekly Updates
A standing weekly check-in so you always know exactly what's shipped and what's next.
Dedicated Team
The same senior team from kickoff to launch — no rotating juniors, no context lost.
Startup Mindset
We think like founders, not vendors — prioritizing speed to market and runway.
Modern Technologies
A battle-tested, modern stack chosen for reliability and long-term maintainability.
Long-Term Support
We don't disappear after launch — ongoing support keeps your product healthy as you grow.
Julian Roth
Founder & CEO, ClosWit
“I started ClosWit because I watched too many great founders get taken advantage of by agencies that treated their startup like just another invoice.”
Before ClosWit, I spent years building products for other people's startups — and saw the same pattern over and over. Founders with brilliant ideas, stuck choosing between developers who didn't understand their business and agencies more interested in billable hours than outcomes.
ClosWit exists to be the technical co-founder I wish every one of those founders had. That means transparent pricing, honest timelines, and a team that treats your roadmap like our own equity depends on it — because we genuinely believe it should.
If you're a founder with an idea, I'd love to hear what you're building. That first conversation costs nothing, and it might be the one that gets your startup off the ground.
— Julian Roth
Everything Your Startup Needs, Under One Roof
From first idea to long-term scaling, one dedicated team covers the entire technical side of your business.
Startup Consulting
We help you validate your idea, define your MVP scope, and build a plan investors and users can believe in.
MVP Development
A lean, launch-ready first version of your product, built fast without cutting corners on quality.
Mobile Apps
Native and cross-platform iOS and Android apps that feel fast, polished, and built to scale.
Web Applications
Modern, fast, SEO-friendly web apps built on a stack that grows with your business.
AI Solutions
Practical AI features — from automation to intelligent search — that add real product value.
UI/UX Design
Premium, conversion-focused product design that makes users trust your brand instantly.
Backend Development
Robust, secure APIs and data architecture that stay reliable as your user base grows.
Cloud Infrastructure
Secure, cost-efficient cloud setup and DevOps practices from day one, not as an afterthought.
Maintenance
Ongoing monitoring, updates, and support so your product keeps running smoothly after launch.
Startup Scaling
Help growing your team, product, and infrastructure once you've found early traction.
Ideas We've Helped Bring To Life
A sample of the products we've built for founders like you. Real client work is added as projects launch.
Placeholder Project One
- Challenge
- Placeholder challenge: a manual, spreadsheet-driven workflow that couldn't scale.
- Solution
- Placeholder solution: a custom web application automating the entire process end to end.
- Results
- Placeholder results: significant time savings and a fundraising-ready product in under 4 months.
Placeholder Project Two
- Challenge
- Placeholder challenge: launching a two-sided marketplace with zero technical co-founder.
- Solution
- Placeholder solution: a lean MVP validating demand before investing in native mobile apps.
- Results
- Placeholder results: early traction that led to a successful seed funding round.
Placeholder Project Three
- Challenge
- Placeholder challenge: strict compliance requirements and a complex user journey.
- Solution
- Placeholder solution: a secure, compliant platform designed around real patient workflows.
- Results
- Placeholder results: adopted by pilot clinics within weeks of launch.
Placeholder Project Four
- Challenge
- Placeholder challenge: an ambitious AI feature set with an unproven technical approach.
- Solution
- Placeholder solution: a rapid proof-of-concept followed by a production-grade rebuild.
- Results
- Placeholder results: launched publicly with strong early user retention.
A Clear, Predictable Path From Idea To Launch
No guesswork, no black boxes — just seven proven stages that keep your project on time and on budget.
- 01
Discovery
We learn your business, your users, and your constraints before proposing any solution.
- 02
Planning
A scoped roadmap with milestones, timelines, and a fixed budget you can rely on.
- 03
Prototype
Clickable prototypes so you can test the experience before development begins.
- 04
Development
Agile sprints with weekly demos, keeping you involved in every major decision.
- 05
Testing
Rigorous QA across devices and browsers so launch day has no surprises.
- 06
Launch
A coordinated go-live with monitoring in place from the very first user.
- 07
Support
Ongoing maintenance and a direct line to your team long after launch.
Questions Founders Ask Us
Answers to what founders want to know before booking a strategy session. Don't see yours? Just ask.
Cost depends entirely on scope, but we always provide a fixed, transparent quote before any work begins — no hourly surprises.
Ready To Build Your Startup?
Book a free, no-pressure strategy session and leave with a clear plan for turning your idea into a launched product.