Nisshi 日誌
Encrypted bullet journal · iOS & watchOS

Rapid logging.
Fully yours.

A fast, distraction-free journal for your phone and wrist. No accounts, no ads, no tracking — your entries are yours alone. And when you sync, they travel end-to-end encrypted, so only you can ever read them. Inspired by The Bullet Journal method created by Ryder Carroll (bulletjournal.com)

Download for iOS Get Nisshi Sync
Free local backup · cloud sync optional · iOS 26+
9:41
Today · Mon, Jun 29
Daily Scorecard
Completed
Anytime
·Draft the Q3 planning doc★
×Reply to Mara about the lease
·Pick up prescription
09:00
○Standup & sprint review
12:30
–Lunch w/ Jane — try the new udon place
·Task –Note ○Event Anytime
New task…
Daily
Monthly
Future
Collections
More
How to read it ·Task –Note ○Event ×Done ⊘Cancelled >Migrated ★Priority
01 — Daily Log

Log it in a tap.
Migrate it in a swipe.

Every day gets its own page. Capture tasks, notes, and events into 15-minute time slots — or drop them under Anytime. Tap a bullet to cycle open → done → cancelled. Star what matters. Didn't get to it? Migrate it forward. Tag an entry with where it happened — the location stays on your device, like everything else.

Cycle states
One tap moves a bullet through open, done, and cancelled.
Time slots
Group entries by the quarter-hour, or keep them untimed.
Migrate & copy
Push a task to any future day, or copy it forward.
Full history
Every edit is logged in an append-only audit trail.
9:41
Tue, Jun 30Today
Anytime
·Send invoice #214★
>Fix the leaky tap
·Water the plants
08:30
○Dentist — Dr. Smith
15:00
–Listened to a great podcast on local-first apps — worth a re-listen
19:30
●Dinner with the JonesesTrattoria Vecchia
New task…
Daily
Monthly
Future
Collections
More
02 — Plan & collect

Zoom out to the month, the quarter, or break free of dates entirely.

The Monthly Log spreads tasks and events across the weeks ahead; the Future Log plans by quarter across the years. Collections hold everything that doesn't belong to a date — free-Markdown documents or structured logs built from reusable templates.

9:41
June 2026
·File quarterly taxes★
>Review monthly subscriptions in credit cards
×Renew passport
29 Mon
–Won first pickleball match. Big day.
26 Fri
–Flew to Barcelona for the week
21 Sun
○Father's Day lunch
Daily
Monthly
Future
Collections
More
Monthly Log
9:41
Future Log
Q3 · 2026Jul – Sep
·Evaluate a drip-irrigation install
·Repaint the fence — call the contractor
Q4 · 2026Oct – Dec
○25th-anniversary trip
·Review estimated taxes to avoid penalties
Daily
Monthly
Future
Collections
More
Future Log · by quarter
9:41
Templates Collections
Inbox
Field Notes
Car Repair History
Garden Plants
About Bullet Journaling
Books to Read
Recommended Podcasts
Daily
Monthly
Future
Collections
More
Collections · open text & structured
03 — Photos

A photo is worth a thousand notes.

Attach up to 10 photos to events and notes, and in collections. They're downscaled to compact memory-joggers — never archival bloat — and open in a full-screen, swipeable, pinch-to-zoom viewer. Delete one and it lands in the Trash, fully restorable.

≤ 512px longest edge ~20–45 KB each Encrypted end-to-end
9:41
1 of 2
Photo on an entry
Swipe to browse photos
22:16
Today
Anytime
·Draft the Q3 planning doc fo…★
06:15
–Listened to a great podcast on…
04 — Apple Watch

Today, on your wrist.

Today's log mirrors to your Apple Watch. Cycle a task's state from the wrist, or dictate a new note straight into the microphone — it syncs back the moment your phone is reachable.

The watch holds only a plaintext snapshot of today — no key, no database, no photos. It re-scopes itself automatically at every local midnight.

05 — Security & your data

Encrypted by default.
Yours by design.

No account. No email. No telemetry. Your journal lives in a file-protected database on your device, and the only key is derived from a password only you know.

Layered key hierarchy

A 256-bit master key wrapped by PBKDF2-SHA256 at 600,000 rounds. Change your password without ever re-encrypting your data.

File-protected on device

The database uses iOS Data Protection — AES-encrypted by a class key tied to your passcode and the Secure Enclave. Unreadable while locked.

24-word recovery

Lose your password and a BIP-39 recovery phrase re-derives the master key on any device. No reset email, because there's no server that could send one.

Your recovery phrase
Shown once at setup. The server never sees it — recovery is verified against a one-way SHA-256 fingerprint, never a stored key.
1 harbor 2 velvet 3 cinder 4 meadow 5 quartz 6 lantern 7 ember 8 ······
06 — Export & backup

Your data leaves whenever you want.

No lock-in, ever. Export the whole journal to a single Markdown file for archival or printing — or write an encrypted backup you can restore on a new device with your recovery password.

Markdown export
Every log & collection in one portable file.
Encrypted backup
One sealed file. Restore with your recovery password.
Optional
Nisshi Sync

Sync everywhere.
On a server you own.

There is no Nisshi cloud. You run the sync server yourself — on a home machine or any host you like. It stores nothing but encrypted blobs keyed by a random account id, never holds your key, and makes no outbound requests to anyone.

Free & open source
Node 20+ and a single SQLite file. No accounts to buy, no processor involved.
✓End-to-end encrypted, last-write-wins merge
✓iPhone & Apple Watch, always current
✓One shared join code for your household or team
✓The whole vault is one file you can back up
Start syncing
Setup instructions on GitHub. The app is fully functional offline — sync is never required.
Coming soon
Nisshi isn't on the App Store yet.

We're putting the final polish on it. Write to info@nisshi.app and we'll tell you the moment it ships.