Apps for iPhone, iPad, Mac and the web, and what we learn building them.https://objectgraph.com/en-ushttps://objectgraph.com/blog/geo-elevation-2-1-read-the-ground/https://objectgraph.com/blog/geo-elevation-2-1-read-the-ground/Paths that follow real trails and roads. Areas that answer for the ground inside them: highest and lowest points, slope and contour maps, the terrain in 3D, every trail that crosses them. Print it on paper or in plastic. In five languages.Fri, 02 Oct 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-measure-3-1-along-the-trail/https://objectgraph.com/blog/geo-measure-3-1-along-the-trail/Distances that follow roads and paths, with the travel time. A points table you can type into. Select, Add Points and Freehand, so the map stops adding points by accident. On iPhone, iPad, Mac and Vision Pro, in five languages.Thu, 01 Oct 2026 00:00:00 GMThttps://objectgraph.com/blog/train-of-four-2-from-iseismometer-to-a-journal/https://objectgraph.com/blog/train-of-four-2-from-iseismometer-to-a-journal/In 2014 an anesthesia resident asked whether iSeismometer could measure a patient's twitches. The app we built with him was evaluated in the Canadian Journal of Anesthesia. Version 2.0 keeps that measurement and rebuilds everything around it.Wed, 30 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/gpx-explore-2-0-draw-fix-edit-gpx/https://objectgraph.com/blog/gpx-explore-2-0-draw-fix-edit-gpx/GPX Explore becomes a GPX editor on the Mac, iPhone and iPad: routes that follow the trail, drag to re-route, elevation for every drawn point, and every fix a recording needs, saved as plain GPX that keeps everything.Sun, 27 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/iretrophone-3-1-pull-it-like-a-real-phone/https://objectgraph.com/blog/iretrophone-3-1-pull-it-like-a-real-phone/A tap on a hole no longer dials by itself, a ghost finger shows how a rotary dial works, and iRetroPhone now speaks German, French, Spanish, Italian and Japanese.Thu, 24 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/myfoodanalysis/https://objectgraph.com/blog/myfoodanalysis/A food data project that started with curiosity: 455,000 foods from USDA FoodData Central, a Food Finder that searches by twelve nutrients at once, and the whole curation open source so anyone can check it.Thu, 24 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/ihalloween-2/https://objectgraph.com/blog/ihalloween-2/Our 2008 Halloween sound app, rebuilt: the front camera notices a visitor, the pumpkin on the screen follows them with its eyes, and it screams. With the same screams we bought for it eighteen years ago.Tue, 22 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/seismica-1-2/https://objectgraph.com/blog/seismica-1-2/Seismica now replays Tōhoku, Sumatra–Andaman, Ridgecrest and Türkiye–Syria on the map, searches any region and period, and keeps studies with Markdown notes that travel as one .seismica file.Sat, 19 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/isamegame-6/https://objectgraph.com/blog/isamegame-6/iSameGame is back on the App Store as a new app: spheres you can tilt, four board sizes, every board a code a friend can play too, daily boards with Game Center leaderboards, and the scoring it has had since 2008.Fri, 18 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/jev-plays-samegame/https://objectgraph.com/blog/jev-plays-samegame/TypeSafe's Jev makes typed decisions instead of writing text. I gave it every legal move on a SameGame board and let it play samegame.app.Thu, 17 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-tracker-3-record-your-walk/https://objectgraph.com/blog/geo-tracker-3-record-your-walk/A rebuilt GPS recorder for iPhone, with photo waypoints, Watch controls and a route you can follow back to the start.Tue, 15 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-elevation-for-mac-2-0/https://objectgraph.com/blog/geo-elevation-for-mac-2-0/The Mac app sold on its own since 2016 is rebuilt from Geo Elevation 2.0: a sample every 30 metres, a chart with sea level and water, the terrain in 3D, import and export, five languages, heights from our own server. A free update for everyone who owns it.Mon, 14 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-measure-for-mac-3-0/https://objectgraph.com/blog/geo-measure-for-mac-3-0/The Mac app sold on its own since 2013 is rebuilt from Geo Measure 3.0: several shapes in one file, delete and undo, export to KML, GPX and PDF, areas on the ellipsoid, five languages. A free update for everyone who owns it.Mon, 14 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/elevation-api-behind-geo-elevation/https://objectgraph.com/blog/elevation-api-behind-geo-elevation/How elevationapi.geosq.com serves elevation profiles for the whole planet from our own server: OpenTopoData, 22,912 ASTER tiles, 65,341 Mapzen tiles, and a 100-millisecond answer.Sat, 12 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-elevation-2-0-the-hill-is-no-longer-flat/https://objectgraph.com/blog/geo-elevation-2-0-the-hill-is-no-longer-flat/A sample every 30 metres so a real hill reads as one, a chart with sea level and water, the ground around your path as a 3D surface you can turn, spot heights, delete and undo at last, import and export, a proper Mac app. In five languages.Sat, 12 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/geo-measure-3-0-any-area-any-distance/https://objectgraph.com/blog/geo-measure-3-0-any-area-any-distance/Several shapes in one file, delete and undo at last, coordinates you can type and walk, export to KML, GPX and PDF, a proper Mac app, and areas computed on the ellipsoid. In five languages.Fri, 11 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/export-apple-watch-workouts-as-gpx/https://objectgraph.com/blog/export-apple-watch-workouts-as-gpx/Apple Health keeps every route your Apple Watch recorded, but not as a file. Here is how to get any workout out as a GPX file with heart rate, cadence and power, one at a time or all at once.Thu, 10 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/heart-rate-and-power-from-a-gpx-file/https://objectgraph.com/blog/heart-rate-and-power-from-a-gpx-file/GPX files from Garmin, Strava, Wahoo, Coros, Suunto and Apple Watch carry heart rate, cadence, power and temperature on every point. Most viewers ignore them. Here is how to see them, and what the numbers mean.Thu, 10 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/how-to-localize-an-ios-and-mac-app-in-four-languages/https://objectgraph.com/blog/how-to-localize-an-ios-and-mac-app-in-four-languages/String Catalogs generated from the compiler, the strings the compiler cannot see, screenshots per language, and localized App Store listings and screenshots uploaded from the command line.Thu, 10 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/how-to-open-a-gpx-file-on-a-mac/https://objectgraph.com/blog/how-to-open-a-gpx-file-on-a-mac/Three ways to open a GPX file on a Mac, what you will see in each, and how to make one app the default for every .gpx file.Thu, 10 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/gpx-explore-1-5-whole-file-whole-workout/https://objectgraph.com/blog/gpx-explore-1-5-whole-file-whole-workout/Heart rate, power and cadence charted from your GPX, a real workout summary with moving time and splits, files that used to fail now open, and a way to share the map as a picture.Wed, 09 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/iretrophone-3-the-2008-app-done-properly/https://objectgraph.com/blog/iretrophone-3-the-2008-app-done-properly/Our App Store opening-day rotary dialer, rewritten in SwiftUI: a measured Western Electric dial, synthesized clicks, and nothing on the screen the 2008 version did not have.Wed, 09 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/iseismometer-1-7-home-seismic-network/https://objectgraph.com/blog/iseismometer-1-7-home-seismic-network/A complete rebuild for iPhone, iPad and Mac: a real gravity filter, an event detector, recordings you can open in NumPy, and a Mac that receives every phone in the house. Plus a new site, seismograph.com.Wed, 09 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/workoutgpx-1-5-export-many-at-once/https://objectgraph.com/blog/workoutgpx-1-5-export-many-at-once/Select several workouts, or everything under a filter, and share every GPX file in one go. The most-asked-for thing since 1.4.Wed, 09 Sep 2026 00:00:00 GMThttps://objectgraph.com/blog/monmon-one-shot-apple-silicon-monitor/https://objectgraph.com/blog/monmon-one-shot-apple-silicon-monitor/A macOS TUI that shows E-cores, P-cores, GPU, and the Neural Engine — designed, built, published to PyPI, and shipped to Homebrew in a single Claude Code session. Here is the prompt and the result.Fri, 17 Apr 2026 00:00:00 GMThttps://objectgraph.com/blog/introducing-catalyst-ai-platform/https://objectgraph.com/blog/introducing-catalyst-ai-platform/A multi-tenant AI platform with multi-provider models, Python execution, image generation, web search, and more — deployed at catalyst.voov.aiTue, 17 Feb 2026 00:00:00 GMThttps://objectgraph.com/blog/nanochat-dgx-spark/https://objectgraph.com/blog/nanochat-dgx-spark/How I adapted Andrej Karpathy's nanochat to run on NVIDIA DGX Spark with CUDA 13.0 - complete training results includedFri, 21 Nov 2025 00:00:00 GMThttps://objectgraph.com/blog/much-needed-update-geosq/https://objectgraph.com/blog/much-needed-update-geosq/Major updates to GeoSquare including elevation profiles, GPX viewer, and GeoJSON tools for our 10k monthly usersFri, 03 Oct 2025 00:00:00 GMThttps://objectgraph.com/blog/linux-add-swap/https://objectgraph.com/blog/linux-add-swap/How to add Swap to LinuxSat, 26 Jul 2025 00:00:00 GMThttps://objectgraph.com/blog/building-mcp-pyexec-python-execution-server/https://objectgraph.com/blog/building-mcp-pyexec-python-execution-server/Complete guide to building a secure Python execution MCP server with Docker isolation, JWT authentication, session management, and HTTP streaming supportFri, 25 Jul 2025 00:00:00 GMThttps://objectgraph.com/blog/migrating-supabase-jwt-jwks/https://objectgraph.com/blog/migrating-supabase-jwt-jwks/How to upgrade your FastAPI authentication to use Supabase JWKS for better security and performanceMon, 21 Jul 2025 00:00:00 GMThttps://objectgraph.com/blog/how-to-use-mcp-inspector/https://objectgraph.com/blog/how-to-use-mcp-inspector/Use MCP Inspector for HTTP StreamingWed, 16 Jul 2025 00:00:00 GMThttps://objectgraph.com/blog/geo-tracker-gps-tracking/https://objectgraph.com/blog/geo-tracker-gps-tracking/Geo Tracker - Create GPX Files using GPS for iOS DevicesSun, 18 May 2025 00:00:00 GMThttps://objectgraph.com/blog/gpx-explore-advanced-ios-mac-gpx-viewer/https://objectgraph.com/blog/gpx-explore-advanced-ios-mac-gpx-viewer/GPXExplore – An Advanced GPX Viewer for iOS and macOSFri, 16 May 2025 00:00:00 GMThttps://objectgraph.com/blog/vibe-coding-claude-code-gpx-viewer-exporter-healthkit/https://objectgraph.com/blog/vibe-coding-claude-code-gpx-viewer-exporter-healthkit/Vibe coding a GPX Viewer and iOS HealthKit Exporter using Claude CodeSun, 30 Mar 2025 00:00:00 GMThttps://objectgraph.com/blog/extract-literals-python/https://objectgraph.com/blog/extract-literals-python/AI Generated Code modifidcation on the FlyTue, 22 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/ollama-cors/https://objectgraph.com/blog/ollama-cors/How to enable CORS and network access for Ollama on macOS, Windows, Linux, and DockerWed, 09 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/optimizing-sse-nginx-streaming/https://objectgraph.com/blog/optimizing-sse-nginx-streaming/Evaluating strategies for scalable and efficient developmentTue, 08 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/httplabs-path-forward/https://objectgraph.com/blog/httplabs-path-forward/Evaluating strategies for scalable and efficient developmentMon, 07 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/httplabs-privacy-focussed-webtools/https://objectgraph.com/blog/httplabs-privacy-focussed-webtools/Privacy first web tools where data does not leave your browserSat, 05 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/chatux-openai-proxy/https://objectgraph.com/blog/chatux-openai-proxy/Streaming Response Proxy for Open AI compatible End pointFri, 04 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/reviving-objectgraph-dictionary/https://objectgraph.com/blog/reviving-objectgraph-dictionary/We revived ObjectGraph Dictionary - The original Google Suggest like DictionaryTue, 01 Oct 2024 00:00:00 GMThttps://objectgraph.com/blog/notebook-lm-myfoodanalysis/https://objectgraph.com/blog/notebook-lm-myfoodanalysis/Podcast Generation using Notebook LMMon, 30 Sep 2024 00:00:00 GMThttps://objectgraph.com/blog/library-project-claude-35-nextjs-supabase-cloudflare/https://objectgraph.com/blog/library-project-claude-35-nextjs-supabase-cloudflare/Creating a Library Project for a School Using Supabase, Next.js, and Cloudflare PagesSun, 01 Sep 2024 00:00:00 GMThttps://objectgraph.com/blog/upgrading-geosq-django/https://objectgraph.com/blog/upgrading-geosq-django/Upgrading GeoSquare to latest DjangoThu, 15 Aug 2024 00:00:00 GMThttps://objectgraph.com/blog/playing-with-microsoft-florence-2/https://objectgraph.com/blog/playing-with-microsoft-florence-2/Testing a new model from Microsoft for Image Captioning, OCR, Segmentation etcFri, 02 Aug 2024 00:00:00 GMThttps://objectgraph.com/blog/text-geneation-webui/https://objectgraph.com/blog/text-geneation-webui/Installing Text Generation Web UITue, 21 May 2024 00:00:00 GMThttps://objectgraph.com/blog/remove-image-background-using-ai/https://objectgraph.com/blog/remove-image-background-using-ai/Remove image backgrounds using AISat, 11 May 2024 00:00:00 GMThttps://objectgraph.com/blog/using-cloudflare-r2/https://objectgraph.com/blog/using-cloudflare-r2/How to upload data to cloudflare R2Fri, 10 May 2024 00:00:00 GMThttps://objectgraph.com/blog/post-converting-wordpress-db-astro/https://objectgraph.com/blog/post-converting-wordpress-db-astro/Revive blog.objectgraph.com from a wordpress backupThu, 09 May 2024 00:00:00 GMT