The Best Apps for Weight Loss: Diet Plan Tools, Fitness Trackers, and More
Looking to lose weight? There’s an app for that. A lot of them, in fact. The trick is finding one that best suits your goals, preferences, and needs. “Weight loss apps can help people become aware of what they’re actually eating, as well as the number of calories they consume, which is helpful because we generally underestimate the number of calories in some foods,” says Deena Adimoolam, MD, an endocrinologist in Fair Lawn, New Jersey.
We’ve reviewed dozens of apps, emphasizing user satisfaction, effectiveness, and expert guidance to round up the best in each category.
Our Top Picks for Best Apps for Weight Loss
- Best for Tracking Eating Habits: Lose It!
- Best for Changing Behavior: Noom
- Best Online Weight Loss System: Found
- Best for Diet Plans: Cronometer
- Best for Fitness: Centr
- Best for Community: WeightWatchers
- Best for Quick Weight Loss: Lose Weight in 30 Days

Best for Tracking Eating Habits
Lose It!
Pros
- “Calorie budget” feature reframes food intake
- Multiple versions available
- User-friendly interface
- Premium versions allow you to sync data from other apps and devices
Cons
- Doesn’t track added sugar
- Free version doesn’t include barcode scanning
Price
- Free version
- Premium: $79.99 per year
- Lifetime membership: $299.99
The best apps for weight loss let you chart your food intake and document exercise, says Reshmi Srinath, MD, director of the Mount Sinai Weight and Metabolism Management Program at the Icahn School of Medicine at Mount Sinai in New York City. Lose It! excels in this regard, she says. “I really appreciate the weekly look at my calorie budget because it helped teach me that even if I had an off day here and there, if I looked at my calories as a weekly budget, I could still achieve my weight loss goals,” says Chaunie Brusie, RN, in Everyday Health’s Lose It! review.
You track food using the barcode scanner or by taking a photo of your plate. The premium version also provides advanced nutrition features like custom insights based on what you track and the ability to sync your fitness data from your smartwatch or other fitness apps.
Editor’s Note: Everyday Health owns Lose It!

Best for Changing Behavior
Noom
Pros
- Focuses on the psychology of your relationship with food
- Access to personal coach and community
- Biometric tracking
- Educational content about eating habits
Cons
- Calorie levels may be too low
- Time-consuming to log
Price
- Noom Weight Loss: Free trial, then $70 per month to $209 per year
- Noom GLP-1Rx: $79-$299 a month with generic meds
- Noom Med (brand-name GLP-1 prescription service): $99 a month (plus medication costs)
Noom is popular because of its focus on psychology and behavior change. The app connects you with a personal coach and focuses heavily on the behind-the-scenes psychological and emotional reasons you may be overeating. With the app, you can log food and find recipes, health insights, psychology lessons, and a community.
Read our full review of Noom.

Best Online Weight Loss System
Found
Pros
- Comprehensive system covers weight loss from different angles
- Access to health coach for a personalized nutrition plan
- Offers weight loss medications for those who qualify
- App can sync with other trackers you use
Cons
- Higher cost than many
- No free version
Price
- $99 to $289 per month, depending on insurance
Found is a comprehensive online weight loss system that includes access to medical professionals, biological testing, prescription weight loss medications, and more to create a personalized weight loss plan that goes beyond overhauling your eating and exercise habits. The Found app focuses on sustainable changes vetted by weight loss experts and is tailored to your lifestyle and health goals. Use the app, which syncs with other health trackers, to connect with your weight loss coach and keep track of movement, nutrition, sleep, stress, and more.
Found also accepts insurance from major insurers like Cigna, Anthem, UnitedHealthcare, Aetna, and Blue Cross Blue Shield.
Read our full review of Found.

Best for Diet Plans
Cronometer
Pros
- Detailed daily nutrition reports and charts help you stay on track
- Can track intake of essential nutrients and identify deficiencies
- Barcode scanner to log meals
- Can sync with other health tracking devices and apps
Cons
- Multiple features and tools may be overwhelming to some
- Access to health coaches not available
Price
- Free with in-app purchases
- Gold membership: $10.99 monthly subscription
If you’re following a specific diet — keto, paleo, or high-protein — this is the app for you. It’s a calorie counter, so you can log food to track your macronutrients and micronutrients to avoid nutrient deficiencies while trying to lose weight. If you’re following a form of intermittent fasting, there’s also a timer to track your eating and fasting times. The app contains a barcode scanner so you can add packaged foods, a database for logging meals from restaurants, and a recipe logger so you can save your favorite meal ideas.
Cronometer syncs with Apple Watch, Apple Health, Oura Ring, and Fitbit and is loaded with tools that can drill down on your daily nutrition in detail — it can even analyze essential mineral intake — all of which is great for people who want to get a robust, clear picture of what they’re eating daily. However, it could feel overwhelming for people who prefer fewer bells and whistles.

Best for Fitness
FitOn
Pros
- Progressive workout programs
- Self-guided or coached sessions
- Recipes and meal plans included
- Star trainers include Chris Hemsworth
Cons
- No free option
- No 1:1 coaching
Price
- $29.99/month or $159.99/year
This fitness app features plans that include workouts, daily tips, meal plans, and guided wellness sessions. It was founded by actor Chris Hemsworth in 2019, and though he sold the company in 2022, videos led by him and his trainer are still prominently available in the app (which is a major draw for some of us). There are workouts for beginner, intermediate, and advanced levels, but the financial commitment of a subscription is not likely to attract complete exercise newbies. Rather, this is a good way to plot out a progressive plan for six, eight, or even 13 weeks. In addition to regular strength-training, there are Pilates, HIIT, and Hyrox programs. Sessions are either self-guided or feature coaching videos, all on-demand.

Best for Community
WeightWatchers
Pros
- Robust community network
- Large food and recipe database
- Weight loss medication available to those who qualify
Cons
- No free version
Price
- Core program starts at $12/month
- Med+ (with GLP-1 prescription service): $74/month (plus prescription costs)
These medications mimic the action of an incretin hormone, or gut peptide, called GLP-1, which is secreted by the small intestine. “This hormone plays a crucial role in managing our insulin levels and blood sugar and sends signals back to our brain to tell us that we’re full,” says Michelle Pearlman, MD, an obesity medicine specialist at Prime Institute in Coral Gables, Florida.
Read our review of WeightWatchers.

Best for Quick Weight Loss
Lose Weight in 30 Days
Pros
- Good for all fitness levels
- Decent workout variety
Cons
- Nutrition features are not as robust as other apps
Price
- Free with in-app purchases
- Unlimited access $99/month or $59.99/year
The highly ranked program is focused on 30 days of workouts, but it also offers a meal plan, nutrition tracking, and low-calorie diets. Because it suggests workouts you can complete and check off every day (instead of you deciding what you’re going to do and then putting it into the app), it can help you stick to a full month of activity. Plus, workouts offer video guidance, so all fitness levels can follow along and get a great sweat session. Info can be synced with Google Fit or Apple Health, making it easy to keep all your data in one place.
Compare the Best Weight Loss Apps
- Free version;
- Premium $79.99/year;
- Lifetime membership $299.99
- Noom Weight Loss: $70/month to $209/year;
- Noom GLP-1Rx: $79-$299/ month;
- Noom Med: $99/month
- Free with in-app purchases;
- Gold membership: $10.99/month
- Core program starts at $12/month;
- Med+: $74/month
Free with in-app purchases; unlimited access $99/month or $59.99/year
Other Noteworthy Weight Loss Apps
- MyFitnessPal We like this well-known app for its extensive food database and ease of use. However, a study found discrepancies in nutrient measurements, as much of the data is user-generated.
- MyMacros+: This app has five million food items in the database and works with nearly any diet, and it’s especially excellent for carb cycling. But the food search feature is clunky, which is why it didn’t make our list.
- Fooducate: This tool can empower you to make lasting changes to your nutrition routine. “I like this app because it recognizes common packaged products and allows you to do more than just analyze your diet. You can track your hunger levels to figure out how certain foods specifically affect your body,” says Tiffany Wright, PhD, founder of Skinny Coach in Los Angeles, California. Unfortunately, macro information for foods is only in the Pro version.
- Healthi: In addition to providing weight-loss plans and meal tracking on its app, Healthi encourages members to join virtual meetings offered several times a week via a subscribers-only Facebook group.
What to Look For in Weight Loss App
The market for weight loss, nutrition, and fitness apps is oversaturated. “The myriad of health apps out there is confusing for both patients and providers,” says Srinath. The ideal app, she says, both motivates you to make healthy changes and holds you accountable for enacting those changes. So how do you choose the right one? Here are a few considerations to keep in mind:
Goals There isn’t one app that does it all. If you want to lose weight by changing your eating habits, a simple calorie counter may be best. If you want to shed pounds while getting strong, look for an app that offers nutrition tools and workouts. Choose the best app for your needs and goals.
Ease of Use To engage with the app consistently, it has to be easy to use. The biggest problem is that people stop using the apps, says Wright. It’s okay to download a bunch of the apps to test until you find one that works for you and your lifestyle.
Budget Many available apps are free with in-app purchases. However, advanced apps that provide expert guidance may charge a monthly or yearly subscription fee. Read the fine print before downloading, and remember that many paid apps renew automatically.
Integration The best apps sync with fitness trackers to help reduce the amount of data you need to enter manually. Be sure to check your wearable to determine if it is a device the app can sync with.
Expert Help If you’re hitting your daily calorie targets and logging food and exercises, but you’ve plateaued, you may need help from a weight loss professional, says Srinath. Find an app that includes professional coaching or experts who can review all the data you’re logging. It’s a plus if the expert is a registered dietitian.
Community If you’re most motivated when participating in a program with others, make sure you choose an app that includes a community feature. Look for apps that feature a community of fellow dieters, offer daily push notifications, or have personalized professional support from registered dietitians or other nutrition and fitness experts.
Are Weight Loss Apps Effective?
FAQ
- Carey A et al. The Relationship Between Weight Loss Outcomes and Engagement in a Mobile Behavioral Change Intervention: Retrospective Analysis. JMIR mHealth and uHealth. November 8, 2021.
- Esposito L. WeightWatchers Diet: Reviews, Costs and How It Works. U.S. News & World Report. March 19, 2025.
- FDA Approves Weight Management Drug for Patients Aged 12 and Older. U.S. Food and Drug Administration. December 4, 2020.
- Knutson J. FDA Approves First Weight-Loss Drug Since 2014. Axios. June 5, 2021.
- FDA Approves New Medication for Chronic Weight Management. U.S. Food and Drug Administration. November 8, 2023.
- Evenepoel C et al. Accuracy of Nutrient Calculations Using the Consumer-Focused Online App MyFitnessPal: Validation Study. JMIR Publications. October 21, 2020.
- Chen J. The Use of a Food Logging App in the Naturalistic Setting Fails to Provide Accurate Measurements of Nutrients and Poses Usability Challenges. Nutrition. January 2019.
- Han M et al. Effectiveness of Mobile Health Applications for 5% Body Weight Reduction in Obese and Overweight Adults. Journal of Obesity & Metabolic Syndrome. December 30, 2021.
- McKay FH et al. Using Health and Well-Being Apps for Behavior Change: A Systematic Search and Rating of Apps. JMIR mHealth and uHealth. July 2019.
- Ghelani DP et al. Mobile Apps for Weight Management: A Review of the Latest Evidence to Inform Practice. Frontiers in Endocrinology. June 24, 2020.
- Lin AW et al. Comparative Validity of Mostly Unprocessed and Minimally Processed Food Items Differs Among Popular Commercial Nutrition Apps Compared With a Research Food Database. Journal of the Academy of Nutrition and Dietetics. April 2022.
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