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Pocket Smile


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Have you ever noticed how many smiles are started by other smiles? Just like laughing, smiling is contagious. Participate in ground-breaking science to see if looking at smiling faces throughout the day can increase happiness!


Day 1: Pocket Smile shows you images of smiling faces or landscapes for 10 days

Day 10: Any changes in mood are tracked and the type of image you see switches for the next 10 days

Day 20: You have completed the experiment! You can now choose what image type to see and the data is anonymously sent to UCL.


Visit for more information on this experiment supported by University College London, including news and updates!

What's New in Version 1.7.2

All new experiment and images comparing the effect of seeing smiling faces and landscapes!

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Pocket Smile
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  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 1.7.2
  • Size: 29.4 MB
  • Language: English
  • Developer:
You must be at least 17 years old to download this application.
  • Frequent/Intense Medical/Treatment Information

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

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