AI Companion Messenger

"Your companion. Your phone. Your rules."

A private messaging app powered by AI — built on your infrastructure, running on your phone, completely under your control. From a simple design brief to a full-featured system with voice calls, spontaneous messages, and multiple companions.

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Infinite Possibilities

Every messenger is unique. Here's a taste of what you can create.

Victorian Gothic messenger demo
Victorian Gothic
Dark romance · candlelight · ornate serif
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Autumn Cottage messenger demo
Autumn Cottage
Cottagecore · nature motifs · golden hour
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Neon Terminal messenger demo
Neon Terminal
Black · neon green · smoke haze
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Soft and Cosy messenger demo
Soft and Cosy
Cream · dusty rose · warm light
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Choose Your Path

From design brief to complete system. Start wherever feels right.

The Grimoire
$15 USD
A complete design brief. Hand it to your AI and build together.
  • Plain-language architecture guide
  • Character design framework
  • System prompt philosophy and structure
  • Feature descriptions with implementation hints
  • Cost and privacy breakdown
  • Deployment walkthrough
  • "How to talk to your AI about building this" guidance
Get the Grimoire
The Familiar
$25 USD
Working starter code and step-by-step deployment. Skip the building, start the conversation.
  • Everything in the Grimoire
  • Complete working base code — single companion, single chat
  • Janet — a fully-built demo companion to swap out whenever you're ready
  • Customisation block at the top of each file — all personal config in one place
  • Step-by-step deployment guide (Cloudflare + Supabase)
  • Mobile-optimised PWA — add to home screen
  • Prompt caching built in for lower API costs
Coming Soon
The Coven
$69 USD
The complete system. Every feature, every expansion, every future update — customised from inside the app.
  • Everything in the Familiar and all expansion packs
  • Full working app with all current features
  • In-app settings menu — customise companions, chats, themes, and features without touching code
  • Multiple companions with independent chat channels
  • Voice notes and voice calls
  • Spontaneous and scheduled messages
  • Private GitHub repo access — fork for automatic updates
  • Expansion Pass: all future features, free forever
  • 72-hour email support for initial setup
Coming Soon

Before You Buy — Know This

  • All tiers use an LLM API for AI responses, which has ongoing costs — typically $1–30/month depending on usage and model. The app is built with Claude (Anthropic) as the primary use case, but can work with any compatible LLM API — Claude, Grok, Gemini, or others.
  • You're building something custom and private — not a platform like Claude.ai or ChatGPT. More freedom, more control, more hands-on setup.
  • No coding experience needed. Your AI handles the code. You handle the creative decisions.
  • You'll need free accounts on Cloudflare and Supabase. Guides are included with every tier.
  • Already bought a lower tier? Upgrade anytime — use the discount code in your purchase confirmation to credit the full amount toward a higher tier.
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Expansion Packs

Add new capabilities to your Familiar. Each pack comes with guides, code examples, and step-by-step instructions.

Integration Pack
$15 USD
"Connect your companion to the wider world"
  • Voice messages via ElevenLabs TTS
  • Voice calls (push-to-talk and hands-free)
  • External memory via Notion integration
Immersion Pack
$15 USD
"Make it feel real"
  • Scheduled and spontaneous messages
  • Realistic variable typing delays
  • Cross-chat companion agency
Group Hug Pack
$15 USD
"More than one voice in the dark"
  • Multiple companion personas with independent channels
  • Group chat with cross-character interaction
  • Custom sticker pack system

All expansion packs are included free with The Coven. Coming soon.

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Stay in the Loop

Get notified when the Familiar, Coven, and expansion packs go live.

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