notJust Hack
The best online Hackathon for Indie Mobile Developers
About notJust Hack
What is notJust Hack?
notJust Hack is an online hackathon where developers build, launch, and showcase real-world apps. Unlike traditional hackathons that focus on prototypes, this challenge is about shipping meaningful products — apps that make it to the Apple App Store or Google Play Store.
We're now heading into our 5th edition — and it keeps getting bigger, bolder, and more impactful with every round. Over the past editions, hundreds of developers from around the world have joined, launched real apps, and grown their skills in the process.
Why Participate?
Challenge yourself to build a functional mobile app and publish it to the stores.
Level up your skills by building and shipping your own app. That's always the best way to learn.
Compete for incredible prizes like MacBook Pros, premium courses, and cash rewards.
Connect with developers worldwide and be part of an exclusive community of awesome builders.
How to participate?
Register for the Hackathon
Sign up for free! Secure your spot and get ready to build. Once registered, you'll get access to updates, resources, and more!
Set Up & Start Building
Decide on your app idea, development stack, and start building! You can work solo or with a team (up to 3 people). Use any tools you like to build faster and better.
Publish & Submit Your App
Your project must be successfully published on the Apple App Store or Google Play Store, and submitted on the notJust Hack website before the deadline.
Community & Judges Vote
The community votes for the best apps, and our judges evaluate based on business viability, functionality, and user experience.
Winners Announcement
The best apps are revealed in the Demo Day Livestream, where winners have the opportunity to showcase their project.
Judging Criteria
✓0. Non-Negotiables (Eligibility Check)+
For an app to be eligible for judging, it must meet these two mandatory conditions:
- Published on the App Store or Google Play Store
- First version launched during the hackathon period
💡1. Innovation+
- Is it unique? – Does the app offer something fresh or creative?
- Does it solve a real problem? – Is there a clear need for this app?
📈2. Business Viability+
- Who is it for? – Does the app target a clear audience?
- Market Fit: Is there demand for this solution?
- Growth Potential: Could it gain users or generate revenue?
⚙️3. Functionality & Complexity+
- Does it work? – Are the core features fully functional?
- Technical Depth: Does it go beyond the basics?
- AI Bonus: If AI was used, did it improve performance or automation?
🎨4. User Experience & Design+
- Easy to Use? – Is the app intuitive and smooth?
- Visually Appealing? – Does it have a clean, consistent design?
- Performance: Does it run well without lags?
