A full-body workout in startup form. Stronger is not just about building a product. It’s about becoming the kind of founder who can. From day one, you're learning, building, iterating and leading. And by the end? You're not just ready to launch. You're ready for whatever comes next.
Side by side, we co-build your product, test your ideas against reality, and push you to evolve. You’ll work with in-house product teams, learn from top-tier operators, and be constantly challenged through live execution, rapid iteration and strategic pressure.
You won’t sit back and take notes. You’ll lead. You’ll stretch. You’ll grow. And by the end, you won’t just have a company. You’ll be a stronger founder — ready for the long game.
You bring your idea. We dismantle it, stress-test it, and reassemble it with structure and insight. Together we clarify your market, your value, your opportunity. You finish this phase with brutal
honesty and a real reason to move forward.
Rapid prototyping. Tactical experimentation. You’ll run multiple product sprints to test assumptions, interact with users, and uncover paths others overlook.
Rough prototypes. Real learning.
We go all in. In-house teams work shoulder to shoulder with you to build your MVP. Frontend to backend, user flows to infra. At the same time, we help you recruit your future team — the people who’ll carry the torch when the program ends.
High-Intensity Iteration & Testing. Your product hits the market. We track users, growth, engagement, feedback loops. Go-to-market, analytics, comms.
Tight cycles, zero fluff.
Now it's about strategy and scale. You’ll sharpen your pitch, design your capital roadmap, define your long-term bets and set the course. All eyes on futureproofing.
We open the doors. You meet investors, ecosystem partners, strategic allies. The goal: funding, partnerships, and the independence to lead your own path.
Once you graduate, you don’t walk away.
You stay part of the STRONGER network — founders, mentors, experts and future collaborators who’ve been in the ring. For insight, support and new plays down the road.
We give you the full picture: the structure, the support, the space. From timelines and terms to daily perks, we’ve built an environment where you can focus on pushing limits, not logistics. Because building a company is hard enough — the rest should be easy.
Every February and September
~ 24 months
English and Spanish
8 to 10 founders
€75,000 in exchange for 7 % equity
In-house builders, advisors and growth operators
Your startup doesn’t clock out
Fuel your brain, not just your ambition
Balance pressure with recovery
Mentors, alumni and growth operators on speed dial
Build hard, live well
Our headquarters are located in the heart of Poblenou — Barcelona’s creative and tech district.
A few blocks from the beach, surrounded by culture, design, energy and good coffee. The kind of environment that feeds both ambition and peace of mind.
We understand this can be overwhelming. If you have any questions after reviewing the FAQs, feel free to reach out to us.
Yes, you can apply as a team. We encourage teams of 2-3 co-founders to apply together to increase your chances of success.
We’ve shown you what we’re building. You’ve seen the pace, the energy, the people.
Now it’s on you: Light the fire that will carry you all the way.