OPAL Tree Health Survey at App Store analyse

App power index: 190 (based on ranks around App Stores today)
Reference Education
Developer: Fera Science Ltd
Price: 0 free
Current version: 2.0, last update: 7 years ago
First release : 04 May 2013
App size: 9.73 Mb
4.2 ( 7232 ratings )
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Estimation application downloads and cost

> 4.18k
Monthly downloads
~ $ 1.71k
Estimation App Cost


OPAL’s seventh survey focuses on the health of our trees. In recent years the number of pests and diseases attacking trees has increased leading to a decline in tree health and in some cases tree loss. In order to manage these problems most effectively we need to study our trees and record information about their condition and any pests and diseases that are found.

The information and photographs in this guide will help you identify pests and diseases on Oak, Ash and Horse Chestnut trees and six of the Most Unwanted, helping you take part in our Tree Health Survey.
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Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
Poland free
UK free
India free
Japan free
Poland free
Russia free
Turkey free
USA free
Korea, Republic Of free
Ukraine free
Available for devices
iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74,