Small tools that actually fix the little things.

I'm kernelian, a solo developer in Japan. I take the little “I wish this existed” moments and turn them into apps you'll actually use. Currently live: Shinsho-yome, a shelf you swipe through one book at a time.

See the work Follow on X

Works

Apps that are live or in the works.

Books Live

新書嫁

A swipeable shelf of Japanese nonfiction paperbacks (shinsho). Every new title each month, one per screen — stack the ones that catch you, read the reviews.

Web (mobile-first) · shinsho-yome.kernelian.com

About

デスクで開発する kernelian と、足元でカーネリアン（紅玉髄）の宝石にじゃれる黒い子犬のイラスト

kernelian — a Japanese solo developer and professional software engineer with 10+ years of coding. I take apps from idea to release entirely on my own. Feature requests or bug reports? Reach me directly on X or email — it's a one-person shop.

Now: Shinsho-yome is live

Contact [email protected]