Sort Picture Piles to help science tackle the big problems for humanity!

All data collected is completely open and can be freely used by everyone!

*** Disclaimer***

Apple is not a sponsor, nor is it involved in any way with the Picture Pile competitions.

What’s New

Version 2.86

- Link to Earth Challenge App has been updated
- Bugfix for the Earth Challenge Pile

App Privacy

The developer, IIASA, 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 Linked to You

The following data may be collected and linked to your identity:

  • Contact Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You Might Also Like