Inclusion Criteria:  Adults age >18 years NASH defined as: Liver biopsy with evidence of steatohepatitis (NAS >=4) or; Imaging study (e.g., ultrasound, CT, MRI) with hepatic steatosis and one of the following: Fibroscan kPa >8.2 or; FAST > 0.35 or; FIB-4 >= 1.45 or; Possession of a smartphone  Exclusion Criteria:  Active or recent (<90 days) participation in lifestyle intervention program, including weight-loss program Active weight-loss supplement use Cirrhosis Inability to provide informed consent Institutionalized/prisoner Other chronic liver disease (e.g., viral hepatitis) Recent Noom use (<180 days) Secondary cause of hepatic steatosis, including significant alcohol consumption (men >30g/d, women >20g/d) Severe medical comorbidities/psychiatric illness at the discretion of the study PI