The purpose of this study is to examine the feasibility and acceptability of a mobile app to improve self-management skills and medication adherence in kidney transplantation, to assess the clinical benefit of mobile app in combination with tailored coaching using text messaging to enhance patient activation, self-management and medication adherence and to determine whether immunological biomarkers such as cell-free DNA and donor specific antibodies are associated with self-management and medication adherence.

Inclusion Criteria:

• 1) age 12-40 kidney transplant recipients with stable kidney function at least one month from the time of transplantation
• 2) have and use a smartphone
• 3) patients without pre-formed antibodies

Exclusion Criteria:

• 1) Patients <12 or >40
• 2) patient with pre-existing antibodies
• 3) patients with rejection at the time of enrollment
• 4) patients without a smartphone
• 5) patients with developmental delay or psychological impairment and unable to use an app