Sync & Privacy

Glyph keeps your data on your device by default and uses your own iCloud account to sync it across devices. Nothing goes to Glyph servers because there are no Glyph servers.

For the full data-flow story see the Privacy Policy.

iCloud Sync

In Settings → iCloud Sync you’ll find a toggle and a connection status indicator.

When sync is on, Glyph uses Apple’s CloudKit (private container) to sync:

Library entries (which novels, which folders)
Reading history (what you’ve read, when)
Bookmarks (positions and notes)
Reader settings (theme, font, pre-fetch, etc.)
Installed extension repositories
Per-source settings and preferences

It does not sync:

Downloaded chapter content, too large; download per-device
The extension bundles themselves, re-fetched per device from the repo URL
Diagnostic logs, always local

Conflicts

Last-write-wins on CloudKit, with per-field merge. If two devices are reading the same novel at the same time, the most recent device “wins” each field, there’s nothing manual to resolve.

Disabling sync

You can toggle iCloud Sync off at any time. Disabling does not delete your local data, turning it back on re-uploads everything from the device.

Incognito mode

In Settings, toggle Incognito Mode to read without logging sessions.

While on:

Chapters you read aren’t added to your History
Reading progress isn’t updated
Bookmarks still work (you can add and use them)

Turn it off and reading resumes logging from that point. There’s no “delete just the incognito session” action because no session is recorded in the first place.

Content rating

Glyph has a four-level filter for adult / mature content. Set it in Settings → Filters & Ratings → Maximum Rating:

Level	What you see
Everyone	Only novels with no mature/adult tags
Teen	Adds teen / shounen / shoujo / violence / suggestive
Mature	Adds mature / gore / sexual content / ecchi / explicit
Adult	No filtering, everything visible

Glyph detects ratings automatically from novel tags. Sources don’t have to mark each novel by hand. The full mapping of tags → rating level is documented for extension authors at Helpers → Content Rating.

Cover blur

Two independent toggles blur cover images for Mature and Adult novels, useful if you want to see those novels in lists but not surface imagery in public spaces. Tap a blurred cover to reveal it temporarily.

What your device stores

Data	Where	Synced?
Library entries	SwiftData on device	Yes (via iCloud)
Reading history	SwiftData on device	Yes
Bookmarks	SwiftData on device	Yes
Reader / app settings	SwiftData on device	Yes
Source preferences	SwiftData on device	Yes
Downloaded chapters	Files on device	No (per-device)
Extension bundles	Cache on device	No (per-device, re-fetched)
Network / diagnostic logs	Memory + recent disk	No (local only)

Coming soon

Library export: save your library, progress, and bookmarks to a portable file you can import on another device or account.
Auto-clean: option to delete read chapters automatically to free space.