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Oct 20, 2026My AI Model Was 89% Accurate. It Missed 99% of the State I Cared About
I trained a small CoreML classifier to estimate whether a player was bored, in flow, frustrated, or...
Oct 20, 20262 min read0 reactions0 comments
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Oct 13, 2026The CoreML Model Was Fine. The Photo Was Too Big.
I hit a very ordinary computer-vision failure this week: the model was doing what I asked, but the...
Oct 13, 20262 min read0 reactions0 comments
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Aug 26, 2026Best Way to Leverage the New Mac mini M6 for HighPerformance AI Development
Canonical version:...
Aug 26, 20268 min read0 reactions0 comments
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Sep 1, 2026The Tracking Bug Wasn't the Model. It Was the Dot Lying.
I spent part of this week debugging an on-device livestock counter in a field-video mode. The model...
Sep 1, 20262 min read1 reactions0 comments
Seven ways Core ML's state APIs crash a stateful VLM
Environment for everything below: macOS 26.5 (Darwin 25.5.0), Apple Silicon (arm64), coremltools 9.0,...
Jul 27, 20265 min read0 reactions0 comments
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Jul 5, 2026How AI Image Classification Powers Smart Photo Cleanup
Every iPhone user knows the feeling: iCloud Storage Full. When I checked my own device, 68% of...
Jul 5, 20262 min read0 reactions0 comments
Local iPhone Stable Diffusion 1.5 Benchmark - ridiculously fast generations!
I have been testing how far Stable Diffusion 1.5 can be pushed running locally on iPhone 17 and how...
Jun 2, 20262 min read0 reactions0 comments
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Jun 6, 2026CoreML vs TFLite: iPhone 15 Pro GPU 2.3x Faster
CoreML Metal GPU delivers 9ms vs TFLite's 21ms Running MobileNetV2 inference on an iPhone...
Jun 6, 20261 min read0 reactions0 comments
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May 22, 2026Training a Personalised ML Model On-Device with CreateMLComponents
Most on-device AI content focuses on inference — you ship a pre-trained model in your app bundle and...
May 22, 20263 min read0 reactions0 comments
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May 10, 2026On-Device Pose Estimation on iOS: What Actually Works in Production (Not Just Research Papers)
Research papers on pose estimation show impressive accuracy numbers. Production apps on consumer...
May 10, 20266 min read1 reactions0 comments
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Jun 2, 2026A Swift library to run Segment Anything natively on iOS (SamKit)
For a while I'd wanted to build a Swift Package that runs Meta's Segment Anything Model (SAM)...
Jun 2, 20265 min read1 reactions0 comments
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Jun 2, 2026Type 'dog' to detect a dog: running YOLO-World on iPhone
What it does Type text like "person, red car, coffee cup" and it detects those objects in...
Jun 2, 20265 min read1 reactions0 comments