The CheckTrees app assists professional arborists performing tree assessments including mapping, treatment recommendations and associate organisms overview. The data can be uploaded to the website where it is possible to browse them on a map and upload photos of the trees. The uploaded inventory can be released using credit units which can be obtained via in-app Google Play purchase, credit card purchase or via invoice. The released inventory can be exported to Shapefile or XLS for further processing or delivery to the client. The inventory can be also published on the website and assigned to the client. A free arborist account is necessary to log in to the app.


With CheckTrees app you can

  • collect tree measurements and assessment information,
  • record tree care recommendations,
  • record associate organisms,
  • backup the collected data for safekeeping,
  • upload the collected data to the portal,
  • publish the tree inventories on the portal,
  • download the inventories in various formats.

Release notes

Version 1.1.7 (r7918, v18)

  • The predefined notes have been updated for the en_US translation.

Version 1.1.6 (r7913, v17)

  • The dropdown with the already filled values of user defined fields should open faster now.
  • Small bugfixes.

Version 1.1.5 (r7888, v16)

  • User can move trees to a different site.
  • When creating a project it is possible to select its units system - either metric or imperial.
  • The translations have been updated (lv_LV).
  • The predefined notes have been updated.
  • The predefined WMS layers in map can now be switched on/off using an icon in the top toolbar.
  • Big fixes.

Version 1.1.1 (r7622, v12)

  • User can move site to a different district.
  • The Czech cadastral map can be displayed in the map as an transparent overlay. The overlay can be switched on/off in preferences.
  • When user logs in and his user account is attached only to a single partner/arborist account this account is automatically selected.
  • A bug when some users could not log in (they got stuck during the selection of arborist/partner account) has been fixed.

Version 1.0.9 (r7515, v10)

  • Photos are imported from the project backup.
  • The app version number can be found on the dashboard screen now.
  • Other small improvements
  • Several app crashes has been fixed.

Version 1.0.8 (r7402, v9)

  • User can switch off drawing of tree crown outlines.
  • User can configure thickness of the reticle (which is used when editing positions and shapes in map).
  • User can configure the reticle color.
  • Several small bugs has been fixed.

Version 1.0.7 (r7339, v8)

  • The app can be now downloaded to tablets only.
  • When entering longer numbers into some entry fields part of the number could be invisible. The text size should now accomodate to fit the whole text into the entry.

Version 1.0.6 (r7333, v7)

  • The help link will open this website in browser.
  • Other small improvements

Version 1.0.5 (r7329, v6)

  • User can restore project directly from the ZIP file.
  • The app name has been changed to CheckTrees.
  • Other small improvements
  • Several small bugs has been fixed.

Version 1.0.4 (r7231)

  • The export/import project actions were renamed to backup/restore project which is more consistent with their purpose.
  • When a tree is saved directly from the Dendrometry tab it is now selected in map.
  • The "Reload database" action was removed. It is not useful anymore.
  • The project upload timeout length was extended.
  • Trees and groups were sometimes not displayed properly in the map when the "Show cable bracings" option was on and the internet connection was weak.
  • The distance from the last node was calculated incorrectly.

Version 1.0.2.f (r7081)

  • The ZIP files with exported projects are now saved to /sdcard/bonsai/exports/ folder.
  • The export of project feature was rewritten to be more reliable.
  • The codes in the treatment overview in the assessment card in the tree editing activity were sometimes partially invisible.
  • The labels of tree groups in map were invisible.
  • The widgets in dendrometry card in the tree group editing activity were not properly aligned.
  • The first associate organism added to a tree sometimes did not appear in the list of the added organisms and user had to switch to other card and back to see it.
  • Various untranslated strings were translated.

Version 1.0.2.e

  • A Latvian translation was added.
  • The default translation is now English.


Address:SAFE TREES, s.r.o., Na Štěpnici 945, 665 01 Rosice, Czech Republic