RETT: Family

Estimated Time: 60 minutes

RETT: Workplace

Estimated Time: 60 minutes

RETT: Law Enforcement

Estimated Time: 60 minutes

Micro Expressions Training Tool

Estimated Time: 75 minutes

Subtle Expressions Training Tool

Estimated Time: 90 Minutes

Micro Expressions Profile Training Tool

Estimated Time: 75 minutes

Micro Expressions Intensive Training Tool

Estimated Time: Several hours

Technical Requirements

Operating System

We support both Windows and Apple operating systems:

  • Apple OSX
  • Windows 7 or later
  • We do not support Windows XP

Independent users have reported success with Linux, however we do not support Linux.

Internet Connection

A consistent high-quality internet connection is required for the duration of the training. There are a lot of assets to each of the tools, and some features may not work at slower connection speeds.


All modules run on desktop or laptop computer. Select modules run on tablet, see below.

  • For Micro Facial Expressions Training Tool and Subtle Facial Expressions Training Tool, most devices are supported (Computer, tablet, phone), including mobile iOS (iPhone, iPad)
  • For Micro Profile Facial Expressions Training Tool and Micro Facial Expressions Intensive Training Tool, you must use a computer. Tablets and phones are not supported.

*Note on phones: We strongly recommend doing the training on screens larger than 7 inches. Otherwise, the facial images will be too small to be useful for learning micro or mini expressions.


All recent browsers are supported. Older versions (e.g. Internet Explorer 8) are not supported.