DailyNote
one-note-per-day app with local-first encryption
Details
- External ID
- 46456972
- Source
- HN
- Company
- —
- Product
- —
- Website domain
- —
- Launched
- Jan. 1, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.09617918313570488
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
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/dailynoteWould love feedback on the crypto model, UX, or anything else.
Enrichment
- Theme
- self-hosted infrastructure and security tools
- Vertical
- Horizontal
- Function
- Vertical SaaS
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- encrypted daily note taking
- Manually corrected
- False
Could you build this?
Yes A minimalist calendar note-taking application using the Web Crypto API (or Libsodium) for client-side encryption synced to Supabase is a classic vibe-coding project.
Discussion
5 comments analyzed.
Competitors mentioned: Bouquin (similar one-note-per-day design with encryption)
Concerns raised: Notifications could be significantly better, Markdown syntax not working (# and * symbols), No version control/history tracking
Feature requests: Version control with git diff-style interface to revert changes, Live markdown syntax highlighting and code blocks, Tagging and search functionality, Image support in notes, Auto-carry incomplete TODO items to next day
Competitors
Other products that read as similar to this one — 94 launches clear the similarity bar, closest 8 shown.
Attention rank: #93 of 95 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 48 days after the earliest competitor.
- Ichinichi · hn · 2026-03-14 · 136 upvotes · similarity 0.63
- Notoria – personal notebook and diary · ph · 2026-09-12 · 1 upvotes · similarity 0.45
- MinkNote · ph · 2026-07-24 · 157 upvotes · similarity 0.44
- Digital Diary · ph · 2026-09-15 · 1 upvotes · similarity 0.43
- Mininote: Instant, plain-text note taking without tracking or lock-in · hn · 2026-08-14 · 23 upvotes · similarity 0.43
- Joonote · hn · 2026-03-21 · 54 upvotes · similarity 0.43
- OmniKeep · ph · 2026-09-14 · 2 upvotes · similarity 0.42
- Floating Notes 2.0 · ph · 2026-09-10 · 10 upvotes · similarity 0.41
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.