https://www.kindler-dev.de/blog/ Notes from building macOS and iOS software — by Björn Kindler. en Tue, 23 Jun 2026 00:00:00 GMT https://www.kindler-dev.de/blog/mundwerk-hands-free-dictation/ https://www.kindler-dev.de/blog/mundwerk-hands-free-dictation/ Tue, 23 Jun 2026 00:00:00 GMT A toggle recording mode means you no longer have to hold a key while you talk — and pauses now turn into spaces and paragraphs on their own. Notes on the 1.1/1.2 updates, and shipping fast enough to break something. https://www.kindler-dev.de/blog/radianceview-a-native-splat-viewer/ https://www.kindler-dev.de/blog/radianceview-a-native-splat-viewer/ Sun, 21 Jun 2026 00:00:00 GMT RadianceKit trains Gaussian splats; RadianceView is where you open, clean up and export them. A build log: the sort bottleneck I had to fix, the clean-up tools, and why it is its own app. https://www.kindler-dev.de/blog/heightmap-from-laser-to-app/ https://www.kindler-dev.de/blog/heightmap-from-laser-to-app/ Tue, 16 Jun 2026 00:00:00 GMT I am a maker with a laser that engraves relief and a UV flatbed printer. I kept needing clean 16-bit height maps from ordinary photos — so I built the tool I was missing. https://www.kindler-dev.de/blog/radiancekit-1-4-colmap-and-cleanup/ https://www.kindler-dev.de/blog/radiancekit-1-4-colmap-and-cleanup/ Sat, 09 May 2026 00:00:00 GMT The 1.4 update opens RadianceKit up to existing photogrammetry reconstructions, lets you extend a training run, and spends a lot of its effort on the unglamorous parts: storage, memory limits, and over-training. https://www.kindler-dev.de/blog/shipping-mundwerk-1-0/ https://www.kindler-dev.de/blog/shipping-mundwerk-1-0/ Wed, 06 May 2026 00:00:00 GMT Mundwerk shipped on May 4. Here is what building a fully on-device dictation tool for macOS actually looks like — the tech choices, the friction points, and what did not make it into v1. https://www.kindler-dev.de/blog/building-druckkosten/ https://www.kindler-dev.de/blog/building-druckkosten/ Fri, 17 Apr 2026 00:00:00 GMT A Mac app for print shops, copy shops and design agencies. Local-first, SwiftData, PDF quotes — and yes, it really does ship in 13 languages. Here is what went into v1. https://www.kindler-dev.de/blog/quinque-a-word-game-for-my-father/ https://www.kindler-dev.de/blog/quinque-a-word-game-for-my-father/ Sun, 05 Apr 2026 00:00:00 GMT My 82-year-old father and I both like the daily five-letter word puzzle. I did not want him wading through ad-choked web versions — so I built one he plays on the iPad and I play on the Mac. https://www.kindler-dev.de/blog/gaussian-splatting-on-macos/ https://www.kindler-dev.de/blog/gaussian-splatting-on-macos/ Tue, 24 Mar 2026 00:00:00 GMT Radiance fields and Gaussian splatting are no longer just a research demo. Here is the lay of the land for Mac developers — what they actually are, what the rendering looks like, and where RadianceKit fits in. https://www.kindler-dev.de/blog/building-listen4me/ https://www.kindler-dev.de/blog/building-listen4me/ Thu, 16 Nov 2023 00:00:00 GMT Listen4Me started as my first iOS app — a live-caption tool that takes spoken German and prints it onto an iPad or iPhone screen in real time. A small accessibility tool, on-device, German only.