Builder Arena

Ship
or die.

A 30-day challenge for builders who want to push themselves to their limits. Build one app in public, from idea to the App Store, next to everyone in the cage below. Post your progress every day or you’re out.

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Starts September 3 at 16:00 UTC

The cage is empty. Be the first one in.

0 builders in

How it works

Days 0 to 2
Pick your idea

Don't just copy another big app. Be original.

Days 3 to 15
Build it

Working app by day 15. Build fast with AI.

Days 16 to 20
Polish and submit

Submit to App Store review.

Days 21 to 30
Market it

UGC, organic, ads. Share your numbers with everyone.

One rule. Post your progress on X every day. Miss a day and you are out. Everyone who drops out stays forever on the losers page.

The upside. You build in public with an audience from day one. Hundreds of people watching your progress means real traffic to your app before it even launches.

The people. You spend 30 days building next to the same builders and seeing exactly how they work. You leave with an app and a network.

The prize. After day 30, everyone still standing goes on a leaderboard ranked by revenue. Winner gets the crown and a very good pinned tweet.

The cost. Free to join.

Starts Sept 3.

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