Inclusion Criteria (Pediatric Volunteers)  Subject must meet all of the following to be enrolled.  Volunteer, or their Authorized Representative, is willing and able to provide written informed consent, including authorization to release health information Volunteer is > 5 years and < 12 years of age (inclusive) at time of consent Volunteer has been diagnosed with Type 1 diabetes Volunteer has been utilizing the Dexcom continuous glucose monitor for a minimum of 6 months prior to enrollment in the study Volunteer must use the Dexcom mobile application Volunteer has a parent or legal guardian willing to participate in the study Volunteer must have access to and use an iOS smart phone, iPhone 10 model or above  Parent / Guardian Volunteers:  Subject must meet all of the following to be enrolled.  Volunteer is willing and able to provide written informed consent, including authorization to release health information Volunteer has a child that meets study inclusion criteria and is willing to participate in the study Volunteer lives with a child that meets study inclusion criteria and is willing to participate in the study Volunteer is willing to be responsible for management of the Eddii mobile application use Volunteer must have and use an iOS smart phone device  Exclusion Criteria:  - EXCLUSION CRITERIA (Pediatric Volunteers)  Subject will be excluded if any of the below are present.  Volunteer is unwilling or unable to provide written informed consent and/or does not have an authorized representative who can provide consent on their behalf Volunteer does not have access to an iOS smartphone device Volunteer does not have access to the internet Volunteer is enrolled in another research study at the time of enrollment  EXCLUSION CRITERIA (Parents / Guardians) Subject will be excluded if any of the below are present.  Volunteer is unwilling or unable to provide written informed consent and/or does not have an authorized representative who can provide consent on their behalf Volunteer does not have access to an iOS smartphone device Volunteer does not have access to the internet Volunteer is enrolled in another research study at the time of enrollment