Skip to content
VIEW
NIMBUS
BACK TO THE SHELFWELLBEING

Sumi

A focus and journal app shaped like an ink wash. Quiet, calm, mobile-first.

IN BUILD$33 / year · $65 lifetimeQ3 2026
Join the waitlist
WHAT IT IS

Sumi is a small phone app for the part of your day that isn't being optimised. It's a focus timer and a journal in one — but the focus timer doesn't gamify, and the journal doesn't prompt you. There's no streak counter, no shame, no social feed.

Three themes — Calm, Focus, Night — each with its own typography, color, and ambient texture. Pick the one that matches the part of the day you're in. Write something. Or don't. Sumi is a tool for slowing down, not a tool for being productive about slowing down.

WHAT'S IN IT
  • Focus timer with no gamification — just time
  • Markdown journal with day-by-day grouping
  • Three themes: Calm (pastel), Focus (warm), Night (deep)
  • 100% local-first, your writing never leaves your phone
  • Built in Flutter — iOS and Android from one codebase
  • No streaks, no notifications, no social
WAITLIST

Be the first to know when Sumi drops.

Leave your email and I'll let you know the day it's ready. No newsletter, no CRM sequence — just one message when the wait is over.

ONE EMAIL · NO SPAM · NO CHASING

NEXT ON THE SHELFCalcifer