I’m an engineering manager in Tokyo. My day job is helping teams grow and ship. In the evenings and on weekends, I ship my own things.
My main side projects are NewsNinja and Bitfolio.
Currently focusing on NewsNinja, it started in 2024 as an RSS reader that groups duplicate headlines, so you see each story once.
Since then it has grown into a dashboard for your whole day: news, Reddit, YouTube, podcasts, social and email in one place, with AI summaries, translation and Stories.
It runs on iPhone, iPad, Mac and Vision Pro, with no account required.
Here I write about what I learn building it:
Swift, SwiftUI & mobile tech stack
Cloudflare Workers and AI in iOS apps
Shipping small and often on a side project
Growing an indie app without a marketing budget
If you’re building something on the side too, say hi.