[UPDATE: Full collection of all 27 ‘Apps for Earth’ here.]

Earth Day is just over a week away and it appears Apple plans to highlight it this year with a campaign to raise money for the World Wide Fund for Nature. WWF and Apple teamed up this time last year on an environmental initiative in China, and this year it’s an App Store campaign that brings to two groups and developers together. Several iOS apps have updated today to highlight money from app sales and in-app purchases going toward WWF through April 24th. The App Store will likely update later today to feature these apps, but we’ve collected apps we’ve found so far below:

  • Enlight ($3.99)
  • Procreate ($5.99)
  • Procreate Pocket ($2.99)
  • Ultimate Guitar ($2.99)
  • Trivia Crack ($2.99/Free)
  • Yoga Studio ($3.99)
  • VSCO (Free)
  • WWF Together (Free)

Each participating app features a modified icon to signal working with Apple and WWF, and both app update change logs and main app descriptions highlight the campaign. Proceeds from paid apps involved from today through April 24th will go to WWF, and free apps participating have created special in-app purchases as well.

Here’s VSCO’s description, for example:

#AppsforEarth support @World_Wildlifehttps://t.co/mXyn438at4

— Philip Schiller (@pschiller) April 14, 2016

In addition to the App Store campaign, Apple has teamed up with the E.O. Wilson Biodiversity Foundation to create Earth Day lessons for students on iPad.

Six lessons are currently featured with resources including iBooks and App Store apps to enhance the educational experience.

Lessons include:

  • Conservation: World Water Monitoring Challenge
  • Ecosystem: Secondary Succession
  • Ecology: Wildlife Population Distribution
  • Conservation: Climate Change
  • Ecosystems: Keystone Species
  • Ecology: Backyard Bioblitz

You can explore all of the Earth Day Lessons here.

Proud to support @World_Wildlife with #AppsforEarth. Together we can help leave the world better than we found it. https://t.co/mUdGTSw2Pb

— Tim Cook (@tim_cook) April 14, 2016

Proud to partner with @World_Wildlife once again. Thank you for your support @LeoDiCaprio!#AppsforEarth https://t.co/eC97QnjHKX

— Lisa P. Jackson (@lisapjackson) April 14, 2016