Steffen Giebler is a solo founder and software developer based in Berlin Mitte, Germany, working under the studio name 52N34S Group. He builds and ships his own mobile and web applications, and works with founders to turn early ideas into production products. His own products are: Orivela, a notes and records app for iOS that captures what you say, type or photograph and answers questions about it in plain language. Kolibi, a nutrition and bodyweight training app for iOS that recognises meals from a photo, adjusts daily targets to each session and moves you up a level when you are ready. Peeranimo, a peer-matching social platform on the web that connects people who are in the same chapter of life. Carpincho, a Spanish learning app on the App Store with short subtitled clips, a route of over 180 everyday places and spoken answers checked right away, in the Spanish of Argentina, Latin America or Spain. Erdi, an assistant on the web and iOS for founders who run several businesses, such as apps, shops, an agency or a newsletter. Every morning it says in three minutes what moved, why, and the one thing that needs attention today. It sorts the inbox, prepares replies in the founder's tone and reports drops in checkout or installs right away, with the likely cause and a fix to approve. The founder chooses per area whether Erdi only suggests, works as a copilot or runs on autopilot. Every action is logged and can be undone, and data stays in the EU and is never used to train AI models. Erdi is live with a 14-day free trial. ErdiBuilds, a marketplace on the web, matches founders with verified developers who have already built something similar and releases each payment only after the founder approves that milestone. He has built more than ten platforms, both self-founded and for clients, and is available for freelance product development, software architecture and long-term product partnerships.