Privacy-first software studio

Building software we
believe in.

We are an independent studio. Our flagship is CharmWriter, the voice-first AI ghostwriter that turns a spoken story into a finished book. Alongside it we build privacy-first tools for finance, knowledge and habits.

Our Products

Tools built to respect you

Self-host for full privacy, or use online — your choice.

CharmWriter

Flagship Online

The voice-first AI ghostwriter. Talk your story through and it writes the book, remembering every character and thread.

Voice-First Story Bible Characters Finish Book

Zumfi Finance

Self-hosted Online

AI-powered personal finance dashboard for banks, stocks, and budgets.

Smart Categories Budgets Portfolio AI Insights

Mnemosyne

Self-hosted

Private AI knowledge base with notes, PDFs, image analysis, and RAG chat.

Smart Notes Image AI RAG Chat Semantic Search

Zumfi Habbit

Paused

Gamified habit tracker — your virtual companion grows as you build better daily habits.

Habit Goals Gamified
Why Zumfi

Software that respects you

Your Data, Your Rules

Self-host for full control, or use our hosted apps — but we never sell your data or track you with ads.

Open Source

Inspect the code, contribute improvements, or fork it entirely. Transparency is not optional.

No Lock-in

Export your data anytime in standard formats. Your information belongs to you, always.

AI-Powered

Local or cloud AI — your choice. Run models privately with Ollama or connect to Claude and OpenAI.

For Developers

  • Self-host with Docker in one command
  • Full source code access on GitHub
  • Contribute features and improvements
  • Run AI models locally with Ollama
Browse repos

For Everyone

  • Use our hosted apps — no setup needed
  • Write stories with CharmWriter
  • Build better habits with Zumfi Habbit
  • Hosted Zumfi Finance coming soon
Self-HostedRun on your own hardware with Docker
Private by DefaultYour data never leaves your network
AI-PoweredLocal or cloud models — your choice
Open SourceInspect, contribute, or fork the code
Let's build together!

Have an idea? Let's talk.

Whether you want to contribute, partner with us, report a bug, or just say hello — we would love to hear from you.