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Photos and Mood

We are recruiting participants for a study that allows them to track their mood using images via their smartphones during their everyday lives.

More specifically, our study involves installing an Android application and using it for at least two weeks. The application lets participants record their emotional state several times a day using images. They are able to track how their mood evolves during the week and relate it to images submitted.

This information, together with phone usage data, is periodically transmitted to UCL servers. In turn, our findings will be used to inform the design of systems for behavioural health interventions.


We are looking for:

Participation in our study is done solely through the app.

Participants must be:

  • Over 18 years of age
  • In possession of Android smartphone released in or after 2014
  • Using this smartphone as their primary mobile device


  • Online/home-based


We are offering a Moto360 smartwatch (RRP £200) to one of our participants. Participants need to register for the prize draw from within the app.

Contact information:

For more information visit:

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