The provider will prescribe the iSage app to the subject and choose a treatment algorithm within the app to make insulin dose adjustments.

Our clinic uses a modified treat-to-target algorithm which is summarized on a 3 x 5 refrigerator magnet.

The provider will choose a treatment algorithm within the iSage app and set the parameters to make insulin dose adjustments no less frequently than every 7 days. The patient is instructed to perform daily fasting glucose measurements and follow the app's recommendations for insulin adjustment.

The investigators will compare changes in HgbA1c from baseline to day 90.

The investigators will calculate the percent of patients achieving HgbA1c <7% at day 90.

The investigators will compare the percentage of subjects using the app as prescribed versus "dropouts".

The investigators will record the number of episodes of hypoglycemia, to include severity of event, related symptoms, and time of day.

Number of contacts with healthcare resources (including telephone calls), ER visits, clinic visits, hospitalizations

The investigators will compare DQOL scores from baseline to day 90. The 15-item DQOL Brief Clinical Inventory provides a total health-related quality of life score that predicts self-reported diabetes care behaviors and satisfaction with diabetes control as effectively as the full version of the instrument. Items are scored on a 5-point Likert scale and are of two general formats. One format asks about the frequency of negative impact of diabetes itself or of the diabetes treatment (i.e., "How often do you worry about whether you will pass out?") and provides response options from 1 (never) to 5 (all the time). The second format asks about satisfaction with treatment and quality of life (i.e., "How satisfied are you with the time you spend exercising?") and is scored from 1 (very satisfied) to 5 (very dissatisfied). Higher scores are negatively valanced, indicating problem frequency or dissatisfaction.