The Bloomathon
The Bloomathon is a 6-day build-in-public sprint where you use Bloom and GPT 5.5 to go from idea to working app. This isn't a traditional hackathon where pitches matter more than product. Here, the only thing that counts is what you ship.
About
Post your progress publicly, build something real, and by Thursday you'll have a working app to show for it! Who It's For Founders and makers who have an idea and want to validate it with a real product, not a slide deck Developers who want to ship a side project without the usual setup overhead Designers who want to turn a concept into a working prototype they can actually use If you've ever said "I have an app idea," this is your week to build it. Credits: How It Works You earn OpenAI credits as you hit milestones. Two milestones, two credit drops. Milestone 1: Sign Up Reward: 2,500 OpenAI credits ($25 value) Sign up on the Bloomathon tracking app with your email and proof that you're following @CreateWithBloom. Once verified, you'll receive your credit code via email. This gives you GPT 5.5 access, enough to build a fully functional app. Milestone 2: Post That You're Building Reward: +2,500 OpenAI credits ($25 value) Post publicly that you're participating in the Bloomathon. Do this within 48 hours of the start (by Monday 4 PM CET) to claim the bonus. How to Enter Follow @CreateWithBloom on X Sign up on the Bloomathon tracking app with your email + proof of follow Get your first 2,500 credits via email → Milestone 1 complete Post that you're building (within 48 hours) and submit proof in the tracking app Get your bonus 2,500 credits → Milestone 2 complete Build your app Submission Requirements To enter judging, you must: Post your finished app on X, LinkedIn, or TikTok by Thursday EOD (CET) Submit your post link + app link in the Bloomathon app Post in #showcase on Discord with: Your app.diy link One-paragraph description of what it does Brief note on your building experience
This hackathon has ended