https://kuhlman-co.com/ Notes, transitions, and lab guides from Kuhlman.Co — a solo software studio in Cape Girardeau, Missouri. en-us © 2026 Kuhlman.Co ethan@kuhlman-co.com (Ethan Kuhlman) ethan@kuhlman-co.com (Ethan Kuhlman) Tue, 24 Jun 2026 12:00:00 +0000 Tue, 24 Jun 2026 12:00:00 +0000 Software iOS Aviation 1440 https://kuhlman-co.com/lab/guides/foundation-models-on-device https://kuhlman-co.com/lab/guides/foundation-models-on-device Tue, 24 Jun 2026 10:00:00 +0000 Schema-driven generation from Apple's on-device LLM — the pattern behind Outpost Discover, Upsee's weekly briefing, and tmpo's natural-language insights. No cloud, no API key, no user data leaving the device. Lab guide https://kuhlman-co.com/lab/guides/healthkit-deep-read https://kuhlman-co.com/lab/guides/healthkit-deep-read Tue, 24 Jun 2026 10:00:00 +0000 Reading, writing, and observing HealthKit data — 8 write types, background delivery, and the partial-authorization quirk that catches every team building a serious Health app the first time. Lab guide https://kuhlman-co.com/lab/guides/swiftdata-migrations https://kuhlman-co.com/lab/guides/swiftdata-migrations Tue, 24 Jun 2026 10:00:00 +0000 VersionedSchema, MigrationPlan, and the colliding-hash gotcha that quietly nukes existing user data on upgrade. The migration patterns shipped in Outpost.Co. Lab guide https://kuhlman-co.com/lab/guides/xcodegen-vendored https://kuhlman-co.com/lab/guides/xcodegen-vendored Tue, 24 Jun 2026 10:00:00 +0000 Ship the XcodeGen binary inside your repo. No Homebrew, no version drift, no Xcode Cloud "command not found." The pattern every iOS app from the studio uses. Lab guide https://kuhlman-co.com/lab/guides/cloudflare-workers-assets-binding https://kuhlman-co.com/lab/guides/cloudflare-workers-assets-binding Tue, 24 Jun 2026 10:00:00 +0000 How to serve a static site from a Cloudflare Worker with the Assets binding — run_worker_first, per-response security headers, SPA path routing. Lab guide https://kuhlman-co.com/writing/why-outpost-exists https://kuhlman-co.com/writing/why-outpost-exists Mon, 23 Jun 2026 14:00:00 +0000 What a packing-list app gets wrong, what on-device AI changes about it, and what a camping trip a few weeks ago made obvious. The decisions behind Outpost.Co's first version. Writing https://kuhlman-co.com/writing/weather-co-free-for-every-pilot https://kuhlman-co.com/writing/weather-co-free-for-every-pilot Sun, 22 Jun 2026 14:00:00 +0000 The Pro tier is gone. Every feature — proactive briefings, route weather, severe-weather alerts, full TAF decoder, multi-source fallbacks — is in the free download. Why I made the call and what the new business model is. Writing https://kuhlman-co.com/dispach/transition https://kuhlman-co.com/dispach/transition Sun, 14 Jun 2026 14:00:00 +0000 On July 1, 2026, ownership of Dispach transfers to an indie team building a full freelancer toolkit. The app keeps running. Your data is yours through July 2028. Writing https://kuhlman-co.com/weatherco/data-sources https://kuhlman-co.com/weatherco/data-sources Wed, 11 Jun 2026 14:00:00 +0000 Open-Meteo went down for a stretch. Reintegrating Apple WeatherKit, NWS, OpenWeatherMap, and WeatherAPI.com turned out to make the product richer, not just safer. Writing https://kuhlman-co.com/lab/guides/xcode-cloud-setup https://kuhlman-co.com/lab/guides/xcode-cloud-setup Sat, 13 Jun 2026 10:00:00 +0000 A step-by-step guide to connecting an Xcode project to Xcode Cloud and running your first build. From prerequisites through GitHub setup to your first TestFlight delivery. Lab guide