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Image: github.com · Ouralia's first public beta. Put on headphones, press Start, and the world around you becomes music: the room shaped by effects, and music that answers what you hear. Every note answers something a...

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Ouralia: a successor to the RjDj reactive audio app

A hobbyist DJ who doesn't code used Claude and Codex to build an open-source Android successor to RjDj that also plays the original RjDj scenes.

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Credits

  • Reddit poster DadCraftTTV Source ↗
  • Repository account dadcraftttv Source ↗

Earliest dated source: 5 Nov 2026

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The full story

Ouralia is a free, open-source Android app described by its maker as a modern spiritual successor to RjDj. With headphones on you hear the sound around you, which you can shape with effects such as echo, reverb, bit crushing and vocoder, or set to a rhythm grid and music the app makes up as it goes.

The maker, a hobbyist DJ rather than a coder, says Claude and Codex did the heavy lifting while they directed the sound and checked the results. The original RjDj scenes are included, and other old scenes can be loaded too. It was released as a public beta.

How it was done

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: I've been building Ouralia, a modern day spiritual successor to RjDj. It's free and open source (GPLForum threadreddit.com
    Reddit poster: DadCraftTTVPosted 5 Nov 2026

    The maker's comment on r/ClaudeAI.

    If it disappears: archived copy of Reddit: I've been building Ouralia, a modern day spiritual successor to RjDj. It's free and open source (GPL (opens in a new tab)

  • The code: github.comCode or repositorygithub.com
    Repository account: dadcraftttv

    The beta release on GitHub.

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Prompt & Solder

An independent community project. Not affiliated with Anthropic.

What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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