Each tool at Stellars Lab exists to remove one small friction from everyday life. They are all free, and everything except Notipop (a Chrome extension) is a web app you use in the browser. The apps themselves are in Japanese for now. Filter by genre to find the one you need.
FLOW TASK
GTD-based task manager. Capture to Inbox, focus on Today — auto-reset every morning keeps you on track.
Notipop
A Chrome extension that saves selected text to Notion in one click.
SizeKit
Resize & convert images to recommended SNS sizes. Runs entirely in your browser — no uploads, no server.
FLOW YOTEI
No sign-up needed. Share a URL and let people pick a time — scheduling made simple.
FLOW BASHO
Decide where to go together by voting. Add the candidates, share the URL — that's the whole thing.
HENSAI
Manage mortgages, card loans, and revolving credit in one place. Visualize your repayment schedule and payoff date.
FLOW KAKEI
A no-guilt household budget app. 3-second entry — start by just seeing where your money goes.
FAMILY NOTE
Write down what your relatives were actually like — not just names and dates. Person cards, a family tree, and interview prompts. Exports to a single HTML file.
MOKUROKU
Answer like / neutral / dislike and you end up with three lists. No personality type, no score — just your own specifics.