iPhone Screenshots


For Study Participants:
Note This app is intended for participants who are enrolled in a research study. You need login information, provided separately, and be an active participant in a study. If you want to learn more about Ecological Momentary Assessments (EMA), or see how LiaD works, select the See Demo App button after you download the application.This Demo is a brief explanation of context-aware EMA for those who want to learn more about using these tools.

For Research Teams:
-LiaD is completely configurable by the research team providing:
-WYSIWYG design through a web browser
-Ability to upload activities from external sources
-Activities show as buttons on the mobile application
-Ability to select the activities to be tracked and control their availability on the mobile device
-Participant can view a history of their actions using the Journal feature
-Ability to trigger a custom survey for each task as it is completed
-Single choice, multiple select, numeric, free text and other response options for surveys
-Complex logic flow, including branching and piping
-Trigger conditions include time algorithms, location, Bluetooth data and motion*

LiaD is part of the PiLR Health system that
-Manages study flow with defined active and transition periods
-Coordinates participants, with personalized communications and devices
-Acquires data from from LiaD simultaneous with other data, such as from bluetooth mobile sensors
-Provides live (dashboard) and exploratory analytics with visualizations
-Template organization for quick setup of studies

Additional LiaD features include:
-Autonomous operation (no data service required to track activities or deliver surveys)
-Secure (encrypted) data upload
-Participants can be allowed to set ‘Do not disturb’ times

What's New

Version 1.2

- Bug fixes.


MEI Research, Ltd
32.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Chinese, French, Japanese, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
Rated 4+
© 2015 MEI Research Ltd


  • Family Sharing

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

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