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Animate your environment

GrowApp allows you to make animations of trees, gardens and landscapes by taking pictures with your smartphone. The app directly transforms these pictures in a time lapse movie that shows changes over the seasons and even over the years. While having fun making an animation of your backyard, you also help scientists better understand the impact of climate change on the environment.

Six focus species

Help climate scientists by especially taking pictures of the following 6 tree species:
When entering a picture, please give the right #tag in the description field:
  • Pedunculate oak (Quercus robur), #oak
  • Common hazel (Corylus avellana), #hazel
  • Common beech (Fagus sylvatica), #beech
  • Silver birch (Betula pendula), #birch
  • Sour cherry (Prunus cerasus), #cherry
  • Small-leaved lime (Tilia cordata), #lime

More info

For more information and updates visit: Nature Today.


Schools can join the GLOBE phenology campaign.


The app has been developed based on an idea of The GLOBE Netherlands Foundation. Technical development of the app and website was done by Geodan and Forget the fish.



The app is funded and supported by a consortium of partners:

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logo globe program

logo european union

logo mygeoss

logo ministry of infrastructure and the envrionment

logo wageningen university

logo geodan

logo forget the fish


Map client software
OpenLayers 3.0, proj4
Map server software
Background Map
OpenStreetMap, © CARTO
Image processing and animation
GraphicsMagic and GM for nodejs
Photo browsing
Extra map layers
Nasa worldview
Layout and icons
Material Design Lite and Material Design Icons
Native app framework
Apache cordova and Android SDK and community camera plugin
Postgres and PostGIS
Custom Server
Based on this design
© 2017 Globe, NatureToday, Geodan, Forget The Fish

Photo's can only be added with the app. Get it now!