HooldusR
Estonian Forest Navigation app
Free · Designed for iPad. Not verified for macOS.
Remote sensing shows where maintenance cuttings may be due across Estonia.
Navigate there, check the stand in situ, and record what you actually found.
HooldusR is a forest navigation app for finding and verifying stands that may
need maintenance cuttings. It is developed at Tartu Observatory, University of
Tartu.
The app draws a map layer derived from remote sensing data covering the whole
territory of Estonia. The layer highlights places that should be checked on the
ground for maintenance cutting. You navigate to a highlighted stand by GPS,
inspect it in situ, and record what you found without leaving the map.
MAP COLOURS
Highlighted areas are coloured by the year the analysis was produced:
⢠Red â produced up to 2023
⢠Orange â area updated in 2024
WHAT YOU RECORD
At your exact position you save one of three values:
⢠Correct â the stand does need a maintenance cutting, as the analysis indicated
⢠Incorrect â the analysis flagged this stand, but no cutting is needed
⢠Missing â a cutting is needed here, but the analysis did not flag it
Each observation stores the date, your coordinates and an optional comment.
IN THE FIELD
⢠Live GPS position with coordinates shown to six decimal places
⢠Standard or satellite base map, switched with one tap
⢠Hide the analysis layer to read the base map underneath
⢠Saved observations drawn on the map as green, red and yellow markers
⢠Delete an observation recorded by mistake
⢠Export the whole survey as a CSV file and send it from your phone
YOUR DATA STAYS YOURS
Observations are stored in a database on your device. Nothing is uploaded, there
are no accounts, no analytics and no advertising. Your survey leaves the phone
only when you export it and choose where to send it.
COVERAGE
The remote sensing layer covers the territory of Estonia. Elsewhere the app works
as a plain map and will still record observations, but no analysis layer is drawn.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Oleksandr Borysenko, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oleksandr Borysenko
- Size
- 3.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 University of Tartu, Tartu Observatory