Conker Tree Science: LeafWatch. Help scientists track the spread of the horse-chestnut leaf miner moth with this simple, intuitive app.

What is happening to Britain’s horse-chestnut trees? Since 2002 Britain’s conker trees have been under attack from a non-native moth – and you can help scientists monitor what’s happening. The LeafWatch app shows you how to identify affected trees and enables you to submit your geo-located leaf photos. This data will show our scientists where the moth is present within the UK today.

Your reports will contribute to the Conker Tree Science research project. Visit us at

What’s New

Version 2.0.2

This app has been updated by Apple to use the latest Apple signing certificate.

Bug fixes for issues introduced by iOS 9

Ratings and Reviews

3.0 out of 5
2 Ratings

2 Ratings

Marcus Heal ,


5 stars! Everyone needs to download this now! Help save the conkers!

Sinbn ,


I have tried six times to register keep getting error codes 503 & 407 thinking of giving up

MrJ1971 ,

Citizen Science!

Great app. I love the idea of 'citizen science'.

One reviewer suggested that you can't submit more than one photo a month. That's not the case at all. The instructions say "You are welcome to submit as many records as you like throughout summer, but please only create 1 record per tree per month."

App Privacy

The developer, Natural Apptitude, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

More By This Developer

You May Also Like