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Vibe Lounge

Build a working app with Gemini in one guided sprint. DevFest Berlin 2026 at SRH Berlin, Saturday 14 November, 11:00 to 15:00.

DevFest 2026 Vibe Lounge

Come build an app with Gemini!

Saturday 14 November, 11:00 to 15:00, at SRH Berlin University of Applied Sciences.

Bring your laptop, pick a challenge, and leave with an app you can share.

The Vibe Lounge is a relaxed room for building with Google AI Studio and Gemini.

No coding experience needed. Every challenge starts simple, and you can keep going if you want more.

Hosted by Esra Kadah, Google Developer Expert for Flutter & Dart, with community mentors in the room.

When to come

Sprints start at 11:00, 13:00 and 14:00. Come at the start of one, so you build together with the room.

The lounge takes a lunch break from 11:45 to 13:00.

Sprint 1 11:00 - 11:45

Morning build

Pick any of the four challenges and build it with Google AI Studio and Gemini.

Sprint 2 13:00 - 14:00

After-lunch build

Same four challenges, fresh start. Mentors in the room help you get unstuck.

Sprint 3 14:00 - 15:00

Build and show

Build any challenge, then show your app in the last demo round of the day.

Pick a challenge

All four run in every sprint, and they are free for every DevFest attendee.

Pick the one you like, or bring your own idea. Each one is sized for a single sprint.

Coffee + Gemini

The Backyard Barista

A Gemini barista that picks beans, roasts and milk for your taste. Then add a brew timer, a shopping list and a Firebase recipe journal. The guide takes about 40 minutes.

Open the Barista guide
Beginner friendly

Launch your portfolio website with AI

Tell Google AI Studio about yourself, let it build your portfolio site, then publish it to Cloud Run.

Open the portfolio codelab
Firebase

Launch a multiplayer game with AI

A turn-based browser game with Firestore and Google Sign-In, set up for you by AI Studio. Play it with friends on Cloud Run.

Open the game codelab
Maps + Gemini

Build with Google Maps Platform and AI

A map explorer with geocoding, local facts from Gemini and Maps grounding, deployed to Cloud Run.

Open the Maps codelab

All challenges and the sprint flow in one place, to bookmark: github.com/esrakadah/devfest-berlin-2026-vibe-lounge

What to bring

  • Your own laptop. A phone works too, but switching between preview, code and prompts is much easier on a laptop. Work laptops often block what AI Studio needs.
  • A personal Google account (an @gmail.com address). Work and university accounts can block features or deployment.
  • Your phone, to open your app and share it.
  • Your charger.

Tip: sign in at ai.studio/build with your personal account before you come, so your sprint starts with building.

How a sprint works

  1. Come in at the start of a sprint. A volunteer at the door checks you in and points you to a seat.
  2. Open your challenge from this page and sign in at ai.studio/build.
  3. Start from the challenge prompt, then add one feature per prompt. Stuck? Mentors are right there to help.
  4. Want to publish it? Deploy to Cloud Run from AI Studio, or use Share for a quick public link. With a personal account and no Google Cloud billing history, the free Starter Tier covers up to two Cloud Run projects.
  5. Show it and claim your badge. At the end of the sprint a few people demo their apps, and everyone can claim the official DevFest 2026 Vibe Lounge badge in the room.

Share what you built with #DevFest, we would love to see it!

The whole day is on the agenda.