Zolt is best for
Data-driven fat loss, muscle gain, or maintenance
Noom is best for
Changing eating habits with lessons and human support
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Noom works on the habits around eating. Zolt works on the numbers. Here is how each one guides your day.
Zolt
Noom
Zolt learns from logged nutrition and changes in body weight, then keeps calorie and protein targets aligned with the intended rate of progress. The adaptive engine works without Coach V2 and without Apple Watch.
Apple Watch is optional. It adds sleep, recovery, activity, workouts, and health insights. Watch calories do not drive Zolt’s learned TDEE or its updates.
How Zolt learns your TDEE explains expenditure, calorie targets, and the starting estimate.
| Feature | Zolt | Noom | Edge |
|---|---|---|---|
| Approach | Adaptive calorie and protein plan | Behavior-change lessons and color system4,7 | Even |
| Calorie budget method | Learned from intake and weight trend | Harris-Benedict plus activity4,9,10 | Zolt |
| Goals supported | Lose, gain, maintain | Weight loss, then maintenance mode1,11 | Zolt |
| Photo, text, voice logging | Photo, text, barcode, or by text message | Photo, text, voice, barcode1,12 | Even |
| Human coaching | AI coach in the app and by text | Noom Guides2,7 | Noom |
| Psychology curriculum | Not a focus | Daily lessons drawing on CBT and DBT1,7 | Noom |
| Listed annual price | $39.99/year | $209/year (Noom Weight)1,8 | Zolt |
The real difference
Noom is a behavior-change program: daily psychology lessons, a green, yellow, and orange food system, and human Guides. Its calorie budget starts from the Harris-Benedict equation plus activity. Zolt is a data-driven plan that learns your real burn from your food logs and weight, and it works for gaining and maintaining as well as losing. If you like numbers and want the plan to adapt to you, we recommend Zolt, at a fraction of Noom’s price.
Noom and Zolt both want you to reach a healthier weight, but they pull different levers. Noom focuses on why and how you eat. Zolt focuses on how much: it learns what you really burn from your own data and keeps calories and protein matched to the rate you chose. Noom’s help center describes a formula-based budget that adjusts as you log progress; it doesn’t document learning from intake against your actual weight trend.
Noom’s daily lessons take five to fifteen minutes and work on the behavior side of weight loss. The green, yellow, and orange system steers you toward lower-calorie-density foods.
Zolt assumes you are ready to work with the numbers. It shows calories and protein, explains why they change, and offers a coach for the moments you get stuck.
Noom calculates a weight loss zone with the Harris-Benedict equation and can add activity: a chosen activity factor, half of workout calories above a threshold, and a small amount per step.
Zolt learns your total burn from your logged intake and weight trend instead of adding activity estimates. That way your target reflects what your body actually did.
Noom is designed around losing weight, with a maintenance mode afterward.
Zolt is built for cutting, bulking, and maintaining, with protein targets for each. If you lift, that matters: the same app can take you from a cut into a lean bulk.
Where Noom wins
Noom brings something most calorie apps don’t: a daily curriculum that draws on CBT and DBT, human Guides, and a community. Its color system teaches calorie density without asking you to learn macros, and it was recently updated to favor protein. For people on GLP-1 medication, Noom also offers clinician-led programs in the same app.
Text Zolt in iMessage, WhatsApp, or Telegram to log a meal, fix an entry, record your weight, or ask how today fits the plan. It uses your real data and makes the change for you.
Use ChatGPT or Claude every day? Connect Zolt to either one to log food and check your numbers without switching apps. Set up the connector.
Published by Zolt, so we are not neutral. We use first-party product pages and store listings, show meaningful competitor strengths, and date facts that may change.