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Old family photos are the last thing you should upload to a stranger’s server. So I built a colorizer that physically cannot — a 129 MB DDColor model running on the phone, with no INTERNET permission in the manifest at all.

I once shipped a “quantized” model that was still half float32, and nothing warned me. Here is how I use Netron to check quantization, scale and zero-point, and whether the graph will actually run on an accelerator.

Our game was dropping frames on a mid-range Adreno device and no amount of CPU profiling explained it. AGI did. Here is how I set it up, what the counters actually mean, and how I read a frame trace.

A 507 MB app is an absurd thing to ship. I did it anyway, because the alternative was sending every conversation to somebody else’s server. Qwen 2.5 0.5B, llama.cpp, and a manifest with no network permission.

Every background remover wants your image on their server and your card on file. This one is a 42 MB model, runs on the phone in about a second, and costs nothing.

I knew I had screenshotted that address. I could not find it. So I indexed my whole gallery with on-device OCR and a Room FTS4 table.

Scanner apps are a notorious category — free, ad-stuffed, and quietly holding the camera permission plus your documents. It turns out you can build one that needs neither.

The moment you most need a translator is the moment you have no signal and roaming would cost a fortune. Download the models on home WiFi, then translate forever with the radio off.

RSS never died, it just stopped being a business — which makes it a very good thing to build on. Android, iOS, macOS, Windows and Linux from one Kotlin Multiplatform codebase.

I have typed the same dumpsys incantation more times than I would like to count. So I built a desktop GUI for ADB — and had to push a DEX onto the device just to draw the app icons.