katspaugh

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

Hi HN and Happy New Year!

I built DailyNote, a minimalist daily notes app: one note per day, a year-at-a-glance calendar, and local-first storage.

The interesting bit is the encryption + sync model:

  - Notes are always encrypted locally before syncing to Supabase.
  - A dedicated data key (DEK) encrypts notes; your password only wraps that DEK (KEK).
  - So when you change your password, it just re-wraps the DEK — no re-encryption of note data.

I built the whole project in one day using Claude + Codex with a spec‑driven approach (tight PRD → implementation). It’s React/TypeScript, IndexedDB for local persistence, and optional cloud sync.

Demo: https://dailynote.xyz/

Repo: https://github.com/katspaugh/dailynote

Would love feedback on the crypto model, UX, or anything else.