This document provides a guide to the LifeFlow application, which is a research project in the Human-Computer Interaction Lab (HCIL) at the University of Maryland. Since it is still under development, we have not released LifeFlow to the public yet. Please contact us directly if you are interested in trying the software. We also welcome your feedback. Please send your comments about LifeFlow to Krist Wongsuphasawat at ude.dmu.sc@wtsirk. LifeFlow is developed by Krist Wongsuphasawat and this user manual is created by Hsueh-Chien Cheng, Karen Guertler and Krist Wongsuphasawat.