Ichinichi
One note per day, E2E encrypted, local-first
Details
- External ID
- 47379898
- Source
- HN
- Company
- —
- Product
- —
- Website domain
- —
- Launched
- March 14, 2026
- Cohort
- —
- Upvotes
- 136
- Upvotes percentile
- 0.9341943419434194
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
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
Enrichment
- Theme
- Vertical
- Horizontal
- Function
- Vertical SaaS
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- encrypted daily note-taking app
- Manually corrected
- False
Could you build this?
Yes A minimalist, one-note-per-day journaling app using local storage or IndexedDB with client-side Web Crypto API encryption is easily built with AI assistance.
Discussion
20 comments analyzed.
Competitors mentioned: Obsidian + Calendar plugin, iCloud calendar, Carousel (DOS diary program)
Concerns raised: Data loss on sync across devices, Can't edit past entries is too restrictive, No search function makes it write-only, Requires server deployment for mobile/desktop sync, Vendor lock-in and data portability
Feature requests: Export to plain text or markdown, Search functionality, Restore deleted notes from local database, View entries from a year ago
Competitors
Other products that read as similar to this one — 64 launches clear the similarity bar, closest 8 shown.
Attention rank: #9 of 65 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 112 days after the earliest competitor.
- DailyNote · hn · 2026-01-01 · 5 upvotes · similarity 0.63
- Tomoshibi · hn · 2026-02-28 · 25 upvotes · similarity 0.46
- Ichigo - Your Positivity Journal App · ph · 2026-09-22 · 6 upvotes · similarity 0.44
- Hibiki · ph · 2026-09-08 · 1 upvotes · similarity 0.44
- Joonote · hn · 2026-03-21 · 54 upvotes · similarity 0.43
- Minimalist editor that lives in browser, stores everything in the URL · hn · 2025-12-24 · 468 upvotes · similarity 0.39
- OrbitalNote · github · 2026-09-26 · 14 upvotes · similarity 0.39
- A canvas-based note taking and organizer app · hn · 2026-07-19 · 61 upvotes · similarity 0.39
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a vertical saas tool for Insurance yet.