Legal
Privacy Policy
TeXBB is a Windows writing application with an optional Android companion viewer. It does not require a TeXBB account and does not use a developer-operated cloud service for document synchronization.
Developer and contact
- Developer: Kiyuob Jung
- Android package:
com.texbb.mobileviewer - Privacy contact: kyjung2357@gmail.com
Information stored on your devices
The Android app stores the following in app-private storage:
- the paired computer's private-network address and TLS certificate fingerprint;
- an encrypted pairing credential protected by Android Keystore;
- offline Markdown, embedded images, PDF files, titles, sizes, hashes, and synchronization times;
- automatic-sync and mobile-data preferences; and
- local synchronization status and abbreviated diagnostic records.
The Windows app stores its local TLS identity and pairing credential under the signed-in Windows account using Windows data protection. User documents remain in the user-selected TeXBB workspace.
Direct communication between your phone and PC
When you choose to pair the apps, TeXBB transfers snapshots directly between your Android device and your selected Windows computer over the local network. The connection uses HTTPS/TLS and the Android app verifies the exact certificate fingerprint shown by the pairing QR code. The persistent pairing credential is sent in an authorization header and is not placed in request URLs.
A pairing QR contains the private-network endpoint, the certificate fingerprint, and a short-lived, one-time invitation. If the computer changes address, TeXBB may use authenticated local-network discovery to locate the same paired computer. TeXBB does not send documents or pairing credentials to a developer-operated server.
Automatic synchronization and mobile data
- Automatic synchronization can run while the Android app is not open.
- Use mobile data is Off by default.
- When it is Off, automatic document synchronization uses an eligible Wi-Fi or Ethernet connection.
- Manual Sync and Google Play operations may use the network currently selected by Android.
Diagnostics
Diagnostic information is not uploaded automatically. Local records may include app versions, the PC address and port, synchronization timing and status, document counts, storage use, and abbreviated failure details. They exclude document contents and pairing secrets. Text is copied to the system clipboard only when the user selects a copy action.
Third parties
TeXBB contains no advertising, analytics, tracking, or separate crash-reporting SDK. Microsoft Store and Google Play may process purchases, installation, updates, security information, and platform diagnostics under their own terms and privacy policies.
Retention and deletion
- A newly confirmed pairing replaces the previous pairing.
- A successful synchronization replaces the previous offline snapshot.
- Clearing Android app data or uninstalling the Android app deletes its locally stored data.
- Deleting the Windows workspace removes its user documents; uninstalling alone may leave a user-selected workspace in place.
- Turning off PC sharing does not automatically delete offline copies already stored on a phone.
TeXBB has no user account or publisher database, so there is no publisher-held account data to delete.
Android permissions
- Internet: communicate with the paired PC and Google Play.
- Network state: determine whether a suitable network is available.
- Receive boot completed: restore scheduled automatic synchronization.
The Google Play build does not request camera, microphone, location, contacts, shared-storage, advertising-ID, or APK-installation access.
Changes and questions
This policy may change when TeXBB's features or data practices change. The date above will be updated. Questions may be sent to kyjung2357@gmail.com.