Rewind 03 – The Target Audience Is Me
from RAMmageddon – DigitalWasteland Hosted by Jens Klasen
Five good fitness apps, five silos, five foreign assumptions about how Jens should train. So he built IDUN, a personal AI coach for training, nutrition, recovery and longevity, with Claude Code and the Claude API, running entirely on his own devices. Jens walks through why software for an audience of one has become economically possible, why the app will never be finished, and how this mirrors the memory crisis from the other end of the stack. In this episode Why none of five quality apps worked, and what IDUN does differently, from morning readiness checks to rep counting with self-soldered sensors No backend, no server, no vendor account: privacy as an architecture decision The math: around fifteen euros a month in API costs versus around twenty-seven euros in subscriptions it replaces Why fixed scope, completion date and depreciation no longer apply, and the hidden costs: scope creep, maintenance and a bus factor of one Why judgment, and real doctors, stay essential Hardware consolidates upwards, software creation individualizes downwards Originally published in German on August 27, 2026: https://klasen.ai/briefing/die-zielgruppe-bin-ich/ English version: https://klasen.ai/en/briefing/die-zielgruppe-bin-ich/ Voices are AI-generated (Jens's voice is a clone of his own). Content and analysis by Jens Klasen.
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