On 18 July, we brought more than 100 builders to Ljubljana for the 8x Mobile Hackathon.
The venue was Tehnološki park Ljubljana, with two floors full of teams, laptops, product ideas, half-working demos, last-minute fixes, and people trying to ship something real before the final deadline.
More than 60 teams built throughout the day. Some arrived with a clear direction. Others found the idea in the room. By the final demos, the whole venue had the feeling a good hackathon should have: fast, focused, a little chaotic, and full of people helping each other get across the line.
We were lucky to have strong partners behind the event, including OpenAI, ElevenLabs, PostHog, bilt.me, Silicon Gardens, Bek Ventures, and of course 8x.
This version of the day also brought YC and EF founder energy into the room, alongside operators with experience from San Francisco, Amazon, venture, product, and creator growth. That made the final demos feel less like a classroom presentation and more like a real room asking the hard question: could this become a company?
The Winners
Huge congratulations to the teams that took the top spots.
First Place: Allivey
Allivey is a mobile app that scans your plushie and turns it into a 3D character on your screen.
Built by:
- Jakob Šušteršič
- Vito S.
Second Place: Dibbs
Dibbs is an AI agent that helps you find a house.
Built by:
- Tilen Tkalec
- Lan Sovinc
Third Place: UGC Girls
UGC Girls is an AI guide that helps creators understand how to make stronger UGC content.
Built by:
- Melissa Çalışkan
- Zoja Šuc
The Judges
Special thanks to the judges:
Darijan Ducic, Rok Bozic, Jaka Bavdek, Theo Bui, Devanshi Jain, Frenk Dragar, Lodovico Benvenuti, Lenart Bobek, Matjaz Matt Petermanž, Leonhard Prinz, Taja Križnar Starčič, Jan Faflík, Jacob Effenberger, Anis Belmokhtar, and Tobias Budig.
Thank You, Ljubljana
Huge thanks to everyone who came, built, judged, partnered, helped with the venue, and spent their Saturday with us.
The best part of the day was not only the final pitches. It was watching teams go from idea to prototype in a few hours, seeing builders meet each other for the first time, and feeling the room get more focused as the deadline got closer.
Thank you to Tehnološki park Ljubljana for hosting us across two floors and making the day feel properly alive.
Already looking forward to the next one.
