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LaBLEr

Design labels and print them on a P15/P12/L13 Bluetooth thermal printer
New in version 1.2.0
- Custom fonts: Add TTF and OTF files under Settings and pick them as a font in the editor.
If a font is missing, a default font is shown, keeping the original reference.
- Double-tap drag moves an element without snapping
- Editor shows text labels at printer resolution
- Tapping the label size opens the label dialog
LaBLEr is a label printer app for Bluetooth Low Energy thermal label printers of the Marklife family (P15, P12, L13). Design your own labels right on your phone, save them as templates, and print them again anytime. It talks to the printer directly over Bluetooth LE, with no account, no cloud, and no vendor app.

Features:

* Multi-line text (size, bold/italic/underline, alignment, several bundled fonts plus your own TTF and OTF files), symbols and emoji, frames, imported images, and QR codes and barcodes (Code 128, EAN-13, UPC-A, Code 39, ITF) with typed QR content for links, Wi-Fi, email, phone and contacts.
* A direct-manipulation editor: pinch to zoom and pan, drag to move, resize and rotate, with snapping to the center, the edges and other elements. Graphics render for the 1-bit thermal head as a clean outline (region tracing or Canny edge detection, with a smooth pass and invert) or with a threshold, Floyd-Steinberg or Atkinson dithering.
* Templates: save, rename, duplicate, favorite and search; export a single label as a JSON file, or back up and restore your whole library.
* Placeholders for the date, the time, a running number, or a free-text value you are asked for at print time.
* An exact 1-bit preview, a choice of copies and die-cut or continuous media, and a print history you can reproduce.
* Reconnects to your saved printer automatically. Available in 13 languages, Material 3 design, light and dark following the system.

Privacy: LaBLEr is a fully local app. It does not declare the INTERNET permission, so the process cannot open a network connection at all. No account, no cloud, no analytics, no tracking. Your templates, print history and settings live in the app's private storage and never leave the device.

Only the P15 is verified on-device so far; the P12 and L13 use the same protocol and 12 mm (96-dot) print head.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.2.0 (1020000) suggested Added on Aug 17, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • io.github.toolicious.labler.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 3.5 MiB PGP Signature | Build Log

  • New in version 1.1.0
    First release.

    Design labels with text, symbols and emoji, frames, imported images, and QR codes and barcodes; save them as templates; and print over Bluetooth LE. Placeholders, print history, per-label export and full library backup. 13 languages. Fully local, with no internet permission.
  • Version 1.1.0 (1010000) - Added on Jul 18, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • io.github.toolicious.labler.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 3.5 MiB PGP Signature | Build Log