Castwyn
AI content enginePost everywhere. In your voice. On autopilot.
One idea in. A week of posts out.
Castwyn turns a single idea into platform-native posts for every network, written in your voice, scheduled for when your audience shows up, and published for you. Flat price. Bring your own keys. No post tax, no credit tax.
No credit card to startYour keys, your dataEncrypted from day oneCancel anytime
Your voice, per network
Set tone, style, and cadence for each platform. Castwyn adapts one idea instead of blasting the same text everywhere.
Bring your own keys
Connect your own OpenAI or Anthropic key. Your AI runs at cost, encrypted and never logged or resold.
Schedule and publish
Queue a week at the best times for your audience and let Castwyn publish to every connected network.
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