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TransektCount

A butterfly monitoring app for transect counters.
TransectCount is used by transect counters during transect surveys. It supports the species-specific counting of butterflies per transect section according to the European Butterfly Monitoring Scheme method.

New in Version 4.2.4:
- Counting page layout better adapted to screen size
- Export to a Basic DB now writes the transect No. into the filename
- Import of a Basic DB with file selection
- Exported results for sorted sections show time of 1. count per section
- Some text updates and corrections
- Docs updated

Features:
- Data collection is based on a transect inspection
- Databases refer to a transect and can be individually created and customised within the app with regard to meta data, transect sections and expected species
- The app contains an internal list with many European species and has a prepared database for a transect section with the most common species to be expected in Germany as a starting point for direct use.
- Export of the current species list for import by TourCount and TransektCount
- Separate counters for internal/external counting areas and separately for ♂-♀-indeterminate, ♂, ♀, pupa, caterpillar or egg
- Results page with prepared presentation for transfer to the input mask of Butterfly Monitoring Germany (www.tmd-daten.de or new: web.app.ufz.de/tagfalter-monitoring/)
- The result can be output as an SQLite DB file or as a CSV table (e.g. for transfer and further use in a spreadsheet programme on a PC)
- The help contains detailed user instructions

Functions:
- Duplicate and delete transect sections.
- Editing the transect section lists (adding and deleting species and editing terms).
- Editor for meta data in preparation for an inspection
- Counter page per section with scroll-down list for species selection
- Species editor for annotation, bulk counter entries and count alert
- The results page shows meta data, notes, totals and counting results per species and transect section

Prerequisites:
The app requires
- storage access permit for importing and exporting counting data,
- the permit to set the screen brightness,
- the permit to prevent the sleep mode.

The smartphone screen should have a minimum resolution of 1920 x 1024 pixels.
The app can be used with Android version 7.1 (Nougat) or newer.

Documentation is provided under:
https://github.com/wistein/TransektCount/tree/master/docs.

TransektCount is one of two apps for monitoring European butterflies.
The second app, TourCount, supports the species-specific and individually GPS-localised counting of butterflies on any walk in nature.

Both apps use the coding scheme of Karsholt/Razowski for European butterflies and thus contain only European butterfly pictures.

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 4.2.4 (424) suggested Added on Apr 22, 2025

    This version requires Android 7.1 or newer.

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

    Permissions
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • com.wmstein.transektcount.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 24 MiB PGP Signature | Build Log

  • Version 4.2.3 (423) - Added on Mar 28, 2025

    This version requires Android 7.1 or newer.

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

    Permissions
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • com.wmstein.transektcount.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 24 MiB PGP Signature | Build Log

  • Version 4.2.2 (422) - Added on Mar 23, 2025

    This version requires Android 7.1 or newer.

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

    Permissions
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • com.wmstein.transektcount.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 24 MiB PGP Signature | Build Log