Producing app store screenshots for OnTrack took me around 18 hours in GIMP. I attempted to automate it and decided to build a new web app for my needs: simple, free and multilingual. Building a new tool is also a good excuse to experiment with AI tools, so this post covers how my usage of Claude Code evolved.
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- What 25 talks and panels at LDX3 London 2026 said about engineering teams in the AI era.
- Anthropic just launched Claude Design, a new research-preview product for generating interactive prototypes, slide decks, and more. I took it for a spin by designing a new analytics screen for my habit tracker app OnTrack, then handed the result off to Claude Code. Here's how it went.
- From Gemini 1.5 Flash to Gemini 3.1 Flash Lite, Google has increased the pricing by an order of magnitude, somewhere between 5x and 20x depending on the use case. This post retraces the pricing history over the past year.
- In this post, I share my experience building a cross-platform habit tracker mobile app using AI coding tools, highlighting the stark contrast between lightning-fast development and the surprisingly slow bureaucracy of Apple and Google's release processes.
- This article retraces how we scaled translating millions of user-written products at Mercari using Generative AI. It covers the various models, prompts and mechanisms implemented over two years.
- This is the story of how my interview process and ensuing onboarding at Mercari went, all the way from Europe, with an 8 hours time difference with Japan.