Product Build Day // Reviews 

30
•
TrustScore 4.5 out of 5

4.7

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Rated 5 out of 5 stars

This is an awesome opportunity for curious people from product, ux, tech and sales and beyond to challenge themselvs. To co-create, build and network. Great mentorship, building and fast-prototyping i... See more

Rated 5 out of 5 stars

It was really good and inspiring event, where everyone is open to try something new for them. In team communication was fun and valuable. Product day also provided free drinks, snacks and subscription... See more

Rated 5 out of 5 stars

Highly recommend for not only building a product, but also an inspiration from people in the room. Using AI makes me feel like the technology is accessible, rather than intimidating. The format is als... See more

Rated 5 out of 5 stars

Marcin and the other mentos were amazing they help us elevate our thoughts and get our end products one step further. Also the choice of the place as amazing Goulandris Foundation, in an amazing li... See more

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Company details

  1. Consultant

Written by the company

Product Build Day runs one-day vibe-coding events where non-coders build apps with AI, test them with users, and pitch the outcome in front of the room.


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4.7

Excellent

TrustScore 4.5 out of 5

30 reviews

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4.7

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(30)

30 reviews in the last 12 months

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Rated 5 out of 5 stars

Very creative, very challenging and very humanized in a very artificial world.

Very creative, very challenging and very humanized in a very artificial world.

Extra kudos for keeping everything on time- I find it very important, and because Im in the Product world that is always an issue with long meetings during brainstorming ext.

July 11, 2026
Unprompted review
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Reply from Product Build Day //

Thank you. In Product the brainstorm always swells to fill the afternoon, so the hard stop is on purpose, and I’m glad it stayed human while it did.

Rated 5 out of 5 stars

Workshop

The workshop was the best I have attended yet! The people were great and very like minded. Marcin had one of the best processes of doing the task in terms of how we worked individually and as a team! I can’t recommend it enough! Good job!!

July 11, 2026
Unprompted review
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Reply from Product Build Day //

Thank you, this made my day. The way the day moves between solo work and team work is the part I fuss over most, so I’m really glad that’s what stood out to you.

Rated 5 out of 5 stars

The day was great

The day was great. The hardest part was making the decision to go and actually showing up. After that, everything just flowed.

The host, the organizers, and the mentors were all incredibly professional. Everything was really high quality. I loved being surrounded by so much creativity and having the chance to try something new.

July 4, 2026
Unprompted review
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Reply from Product Build Day //

Thank you! You named the only hard part, deciding to show up, and you did it. Everything flowing after that is the team's whole job, so I'll pass your words to the mentors, they earned them.

Rated 5 out of 5 stars

Definitely recommend

Great opportunity to network, test out AI industry standard tools for free, challenge yourself to build a working product prototype within just a day - with the assistance of experienced mentors.

July 4, 2026
Unprompted review
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Reply from Product Build Day //

Thank you. You can test the same AI tools at home for free, but doing it against a clock with experienced mentors next to you is what turns a demo into a working prototype by the end of the day. That's the whole reason the day exists, so I'm really glad it landed for you.

Rated 5 out of 5 stars

A hackathon that actually taught me something

I wasn't sure what to expect going into Product Build Day, but it ended up being one of the most practical product events I've attended.

Instead of spending the day listening to talks, we spent it building. In just a few hours, our team went from an idea to a working prototype using AI tools, tested it, and pitched it. All while solving a real challenge for the city of Athens.

What stood out most was the people. It brought together product managers, designers, founders, researchers, and marketers who were all genuinely interested in learning, experimenting, and helping each other. The mentors struck a great balance between guiding and letting teams figure things out on their own.

It was also refreshing to see a hackathon focused on meaningful, real-world problems instead of hypothetical startup ideas. Building something that could actually benefit the local community made the experience much more rewarding.

If you're curious about AI-assisted product development, want to sharpen your product thinking, or simply enjoy collaborating with talented people, I'd highly recommend joining a future Product Build Day. I left with new skills, new connections, and a much better understanding of how quickly ideas can become real products.

July 11, 2026
Unprompted review
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Reply from Product Build Day //

Thank you Nafsika. Getting mentors to guide without grabbing the keyboard is the thing I worry about most before every build day, so reading that it worked is a real relief. And you nailed why we run a live city brief instead of made-up startups, you build harder when someone real actually needs the thing.

Rated 5 out of 5 stars

Enjoyable and valuable experienc

Product Build Day was an overall fantastic experience. Organisation was top-class, comfortable venue, clear communication, friendly and effective facilitation. I've spent entire day collaborating with like-minded people, building and testing products, solving challenges and pitching to mentors. Learned a ton, networked a bit, made lots of connections and discovered valuable insights for my job. Lots of fun for a great price (0). Highly recommend!

July 4, 2026
Unprompted review
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Reply from Product Build Day //

Thanks Tomek. Free and actually useful for your job is a hard combination to pull off, so I'm glad you got both. The venue and the flow you mentioned are the boring 90% nobody notices, we obsess over them so the six hours can stay heads down on building.

Rated 5 out of 5 stars

An Electrifying Space for Builders and Innovators

"An amazing experience building and networking with brilliant minds. The room was instantly packed with learning and high energy. Builders, do not miss out on this, highly recommended!"

July 4, 2026
Unprompted review
Product Build Day // logo

Reply from Product Build Day //

Thank you Neha. The energy you felt is the one thing I can't plan for, it walks in with the people, and this room walked in loud. When a builder tells other builders to show up, that's the review that actually moves someone, so thank you for that.

Rated 5 out of 5 stars

AI experience + LinkedIn booster

One day, four strangers, one brief. We shipped a working AI tool by mid-afternoon and pitched it by evening. No fluff, no theory, just building under real time pressure.
The format works because it forces the two hardest PM skills: cutting scope fast and testing with real users before you're ready. Uxia's synthetic user testing in particular is something I now think about every time I scope a feature.
Bonus I didn't expect: I used the tool we built to review my own job contract a few days later. Real output, real use.
If you're in product or delivery and want proof you can still build, not just manage, this is worth a Saturday.

July 4, 2026
Unprompted review
Product Build Day // logo

Reply from Product Build Day //

Yurii, thank you, this is the one I'll be reading out at the next kickoff. You used the thing you built to check your own contract a few days later, most builds like this never get opened again, so that beats any pitch score. I'll send your note about Uxia's synthetic user testing straight to the team, they earned it.

Rated 5 out of 5 stars

It was great to take part in this event…

It was great to take part in this event and have the opportunity to challenge myself. Thank you🙏

July 4, 2026
Unprompted review
Product Build Day // logo

Reply from Product Build Day //

Thank you Vola. Signing up to be challenged in front of a room of strangers takes more nerve than people admit, and you did it all day. Come build with us again, the door's open 🙏

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