Using Mobile Technology-assisted Outpatient Maintenance Therapy Pediatric ALL

This study is evaluating whether a mobile app that helps children with leukemia (ALL — acute lymphoblastic leukemia) and their families track daily oral medications and weekly blood test results can be used safely outside the hospital during the maintenance phase of treatment. **You may be eligible if...** - The child was diagnosed with ALL before age 16 - The child or family has already been using the mobile app for at least 3 months and has taken medications correctly more than 90% of the time - The patient or their legal guardian consents to participate **You may NOT be eligible if...** - There are no specific exclusion criteria listed for this study Talk to your doctor to see if this trial is right for you.