Shared Care Thyroid Cancer Follow-up Utilizing Thyroid Cancer Assessment Reminder System (TCARS) Study - A Pilot Study.

Inclusion Criteria: Adult (\>18 years old) consenting patients being followed at the Halifax Interdisciplinary Thyroid Oncology Clinic (ITOC) meeting the following criteria: * AJCC stage 1 DTC with no radiological or biochemical evidence of thyroid cancer with undetectable high sensitivity serum thyroglobulin (hsTG \<0.06 mcg/L\*); * Anti-thyroglobulin antibody (anti-TG AB \<20 IU/ml\*); * Thyroid ultrasound scan \[USS\] negative for regional recurrence at least 24 months after most recent treatment; * AJCC stage 2 DTC with no radiological or biochemical evidence of cancer (undetectable hsTG and anti-TG AB and negative thyroid USS) at least 48 months after most recent treatment * Patient is comfortable with using the mobile or Medable application and has access to internet. Exclusion Criteria: Patient does not have a consented PCP.