Hagen

Independent developer building 100% offline, local-first desktop software. Currently launching FinFortress. I write about Python, local machine learning, and taking back your data sovereignty at explorethecosmos.org.

Products

Everything I have currently online.

FinFortress
A local-first desktop tool built with Python, Streamlit, and Plotly. It allows users to drop in their raw bank CSVs and use a local text classifier to auto-categorize expenses entirely on their own CPU. No cloud APIs, no subscriptions, just full financial data sovereignty.
LaunchedJust launched.

Recent activity

Why I’m charging a $19 one-time fee instead of building a $10/mo SaaS

How I built a 100% offline finance dashboard in Python (Full Architecture Breakdown)

Why I’m charging a $19 one-time fee instead of building a $10/mo SaaS

Why I’m charging a $19 one-time fee instead of building a $10/mo SaaS

Why I’m charging a $19 one-time fee instead of building a $10/mo SaaS

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