Can a meditation app fix sleep for blood cancer patients?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Self-declared diagnosis of hematological cancer on stable maintenance management\* by treating physician (i.e., on stable medical therapy) or observation (i.e., no changes in disease targeted medications for the past two weeks) 2. Not currently participating in a therapeutic pharmacologic clinical trial 3. Not planning to receive an allogenic stem cell transplantation during the study time frame (i.e., 20 weeks) 4. Score of \>5 on PSQI (Pittsburgh Sleep Quality Index) 5. Own a mobile smartphone (iPhone with iOS 14 or later or an Android 6 or later) with an active data or WiFi connection 6. Willing to download two mobile apps 7. Able to read/understand English 8. ≥18 years of age 9. Willing to be randomized 10. Willing to drive to a nearby lab for blood draws 3x during the study over the course of 20 weeks (8-week intervention period followed by 12-week follow-up period) 11. Taking sleep medications and/or over-the-counter sleep drugs/supplements (if any) on fewer than 3 nights per week and one of the following: 1) willing to maintain the same intake without change throughout the study time frame (i.e., 20 weeks) or 2) willing to discontinue if intake is prescribed "as needed" (PRN) by a physician throughout the study time frame (i.e., 20 weeks) Exclusion Criteria: 1. Self-report meditation practice or meditative movement practice (i.e., yoga, tai chi, qi gong) of ≥60 min/week in past 2 months 2. Reside outside of the United States of America 3. Any planned change to a new pharmacologic therapy (i.e., new drug) for the treatment of their cancer diagnosis (excluding dose changes) 4. Diagnosed with a sleep disorder except insomnia (≥2 positive categories on Berlin Questionnaire) 5. Taking prescribed sleep medications and/or over-the-counter drugs/supplements (including drugs like NyQuil, Benadryl, and other antihistamine-based drugs) on ≥3 nights per week 6. Any other diagnosed and uncontrolled medical or psychiatric condition 7. Has a pacemaker 8. Shift work schedule