Data Storage

Where your data lives on each device, what is encrypted, and what OS-level backups cover.

Mobile (iOS and Android)

App data

All of the phone app's data is stored as JSON in the app's private sandbox:

Jots. Text, drawings, image references, file references, recording references.
Lists. Items and categories.
Locked Lists. Items and categories. The unlocked state is in memory only.
Scratchpads. Text by category, categories.
Ancestor. A snapshot of the last successful sync. Used to merge cleanly next time.
Settings. Theme, sync config, pairing secret, security settings, font sizes.

App data is plain text in the app's private sandbox.

Binary files

Audio recordings. .m4a files written to a temporary or cache directory. The jot store holds a reference.
Images. References to URIs from the photo picker. If you pick from your photo library, the original stays in Photos.
File attachments. Files picked from the device. The jot store holds a reference plus file name, mime type, and size.
Drawings. Stored inside the jot data, not as separate files.

iCloud and OS backup coverage

App data goes to the app's database, which is included in iCloud backup.
Audio files in temp or cache directories are excluded from iCloud backup.
Image references may point to temporary copies that break after restore.

Bottom line: an iCloud restore recovers all text data (lists, scratchpads, settings, jot text, drawings), but audio recordings and image attachments are lost.

Computer (Windows)

All app data lives under %APPDATA%\JotBunker\.

Stored data

stores/
  Lists, Locked Lists, Scratchpad
  Ancestor (last successful sync snapshot)
  Settings (pairing secret stored in plain text)
  Tags
  Console (system messages log)

These are plain JSON files.

Other files

File	Purpose
`window-state.json`	Window position and size
`autoupdate-disabled.flag`	Opt-out flag for auto-update startup check
`system-messages.log`	Rolling fifty-entry app log for non-sync events
`debug-logs/sync-{timestamp}.log`	One file per sync session. Only written when DEBUG LOGGING is on. Captures every sync event from both devices in a single file; phone-side events are prefixed `[phone]`.

User-facing exports

Path	Contents
`{tagRootPath}/{tagName}/<timestamp>/JotN/...` (default `Documents/JotBunker Tags/`)	Bulk Download All output
`{tagRootPath}/{tagName}/{ts}-<filename>`	Per-item downloads and per-jot tag saves

What is encrypted vs. plain text

Data	Mobile	Computer
Lists / Locked Lists	Plain text on device	Plain text on disk
Scratchpad	Plain text on device	Plain text on disk
Pairing secret	Plain text on device	Plain text on disk
Sync traffic	NaCl encrypted on the wire	NaCl encrypted on the wire
Backup files	Not applicable	AES-GCM encrypted, or plain text (your choice)

See Security for the full threat model.

See also: Security | Backup | Computer App | Phone App