Inclusion Criteria:  Patients must be 16 years of age or older who are being discharged from hospital after undergoing semi-urgent, urgent, or elective abdominal surgery by a colorectal surgeon at The Ottawa Hospital, and have provided informed consent to participate.  Patients enrolled in other clinical trials will still be candidates for this feasibility trial.  Clinicians using the how2trak app in this study will be considered study participants as well. They will be asked to complete the "Patient and Clinician Survey of Application". This survey addresses the experience with the use of the H2T app their feedback regarding usability is fundamental for future improvement.  Exclusion Criteria:  Individuals will be excluded if less than 16 years of age; have no access or ability to use a mobile device; no cellular data/WiFi access; and/or cannot read and write in English.