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Kotlin Multiplatform App Development Competition

Use your Kotlin skills to compete for $30,000 prizes at RevenueCat Shipaton 2026.

The JetBrains Blog2 min

1Overview of Shipaton 2026

RevenueCat Shipaton 2026, the world's largest mobile hackathon, will run from August 1 to September 30. Developers familiar with Kotlin can use Kotlin Multiplatform and Compose Multiplatform to build apps for Android, iOS, desktop, and web from a single codebase. Participants don't need to target all platforms; judges will reward effective cross-platform development.

2Prize Details

The 'Ship Kotlin Everywhere' category offers a total prize pool of $30,000. The first-place winner receives $15,000, second place $10,000, and third place $5,000. The winning app will also be featured on a Times Square billboard, receive an invitation to the App Growth Annual conference in NYC on October 21, a custom Shippy trophy, and media spotlight.

3Grand Prize Opportunity

Kotlin Multiplatform apps entered in the competition remain eligible for the $100,000 Grand Prize and over 20 other categories from #BuildInPublic to Best Game Award, with total prizes exceeding $1 million. JetBrains is serving as a gold sponsor this year.

4Previous Winner's Experience

Chris Krueger, who won first place in the KMP category at Shipaton 2025 with his app Momental, shared: 'Building with Kotlin Multiplatform was enjoyable. Sharing one codebase for Android and iOS gave me more time for user feedback. I was amazed how quickly I could build complex UIs - even features like a full music player worked smoothly across platforms.'

5Participant Benefits

The first 1,000 builders receive 3 months of free IntelliJ IDEA Ultimate, while 200 builders ready to build in public get 2 months of access to Junie, our AI coding agent. Additional resources include a Starter Guide, AI Guide, weekly livestreams, and support from JetBrains advocates on Discord.

6Advantages of Kotlin Multiplatform

Kotlin Multiplatform enables developers to build for multiple platforms from a single codebase. This approach reduces development time while ensuring consistent user experience. Even complex features like music players work seamlessly across different platforms.

7Competition Process

Participants should review the rules on the award page, download the starter kit, and follow the timeline. Apps should demonstrate effective cross-platform capabilities. Judges will focus more on functionality than the number of platforms targeted.

8Why You Should Participate

Shipaton 2026 offers the perfect opportunity to enhance your Kotlin skills and gain cross-platform development experience. The competition can help you reach a global audience, win prizes, and gain industry recognition. The submission deadline is September 30, 2026.

Original article: The JetBrains Blog — Kotlin ile Çoklu Platformda Uygulama Geliştirme Yarışması