Noom

Noom is a psychology-based weight management program delivered through a mobile app. It distinguishes itself from calorie-counting apps by incorporating behavioral science principles — the program addresses the habits and thought patterns behind food choices, not just what you eat.

## Behavioral Psychology Approach

Noom's curriculum draws on Cognitive Behavioral Therapy (CBT), motivational interviewing, and acceptance and commitment therapy (ACT). Daily lessons cover topics like identifying emotional eating triggers, reframing negative self-talk around food, and building sustainable habits.

The theory: diets fail because they focus on food rules. Noom focuses on why people eat what they eat, building internal motivation rather than external restriction.

## Food Logging and Traffic Light System

Noom uses a color-coded food classification: green (low calorie density, eat freely), yellow (moderate, eat mindfully), and red (high calorie density, eat sparingly). Rather than strict prohibition, the system teaches awareness of relative food density. No foods are forbidden.

## AI-Matched Coaching

Each Noom user gets a personal Goal Specialist (human coach) who checks in weekly via in-app messaging. Coaches are AI-assisted — the app surfaces relevant user data and coaching prompts to help coaches provide personalized guidance at scale.

## Progress Tracking

Daily weigh-ins feed into Noom's trend graph, which smooths fluctuations to show true weight trajectory. The app tracks streaks, lesson completion, and behavioral milestones in addition to the number on the scale.

## Pricing

Noom's pricing has varied significantly. As of 2026, plans typically start around $70/month, with discounts for longer commitments. Annual plans can drop to effectively $20-$30/month.