Ichinichi – One note per day, E2E encrypted, local-first

Name: Ichinichi – One note per day, E2E encrypted, local-first
Availability: InStock
Author: katspaugh

by katspaugh·Mar 14, 2026·136 points·59 comments

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AI Analysis

●●SolidCozyNiche Gem

Read-only past entries prevent editing yesterday, forcing you to write today.

Strengths

•One-note-per-day constraint reduces decision fatigue and builds consistency
•E2E encryption with AES-GCM keeps data private before cloud storage
•No signup required to start, stores everything locally in browser

Weaknesses

•Local journaling apps are a crowded category with established alternatives
•Intentionally limited features may frustrate users wanting more flexibility

Post Description

Look, every journaling app out there wants you to organize things into folders and tags and templates. I just wanted to write something down every day.

So I built this. One note per day. That's the whole deal.

- Can't edit yesterday. What's done is done. Keeps you from fussing over old entries instead of writing today's.

- Year view with dots showing which days you actually wrote. It's a streak chart. Works better than it should.

- No signup required. Opens right up, stores everything locally in your browser. Optional cloud sync if you want it

- E2E encrypted with AES-GCM, zero-knowledge, the whole nine yards.

Tech-wise: React, TypeScript, Vite, Zustand, IndexedDB. Supabase for optional sync. Deployed on Cloudflare. PWA-capable.

The name means "one day" in Japanese (いちにち).

The read-only past turned out to be the thing that actually made me stick with it. Can't waste time perfecting yesterday if yesterday won't let you in.

Live at https://ichinichi.app | Source: https://github.com/katspaugh/ichinichi