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Best weight loss apps

These diet apps make tracking weight loss easy

Profile picture of Kathryn Parkman
by Kathryn Parkman ConsumerAffairs Research Team
woman eating food while on phone

You already know that scrolling through your phone doesn’t burn enough calories. There are hundreds of apps out there claiming to help you lose weight. Some help, some don’t. Finding the right app to help you lose weight makes dieting a little easier and a bit more fun: tracking weight loss becomes a game with food tracker apps, calorie counters and exercise motivation.

Top 9 best weight loss apps

Most weight loss apps claim they can motivate you to get healthy and also help you to better track longterm progress in your weight loss journey. In order to help you make an informed decision on your next download, we’ve compiled a list of our top nine weight loss apps out there based on a 4+ stars in the app store and at least 100 total ratings.

Best for diabetics
NuMi

How NuMi works: NuMi by Nutrisystem is a diet app that will remind you to track your meals and snacks, drink enough water and exercise. To log your meals and snacks, simply press the “+” icon or select one of the choices in the journal section (Nutrisystem Entree, SmartCarb or PowerFuel, for example). You can “Create a Custom Activity” to keep track of exercises through the Quick Log function. Plan guidance shows your PowerFuel and SmartCarbs allotment for every meal. It’s also easy to go back and log a meal or snack if you forget earlier in the day.

Compatibility: Requires Android 5.0 and up or Apple iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch. Syncs with FitBit.

Price: Free, with in-app shopping available for Nutrisystem food items.

WEIGHT LOSS APP FEATURES
  • Great for anyone with strict nutritional needs
  • Exclusive games and contests
  • Access to daily nutrition articles, diet tips and recipes based on where you are in your weight loss journey

Best for people on the go
WW

How WW works: This app by WW (formerly Weight Watchers) will track your food, activity and personalized goals. A barcode scanner makes it easy to find SmartPoints value information on almost anything. Once you’ve scanned a product’s barcode, you can track it through the My Day dashboard, where you can also track your diet and exercise. Toggle between foods and activities, or use split screen to track both simultaneously. You can look up specific foods or activities and tap or swipe right to add them to your dashboard. When you find a recipe you like, add it to your “favorites.”

Compatibility: Requires Android 5.0 and up or Apple iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.

Price: You must be a member of WW to use the app. Cost for WW membership varies depending on where you live, but typically costs about $10 per week to attend meetings and $3–$5 per week for the digital program.

WEIGHT LOSS APP FEATURES
  • Search 4,000+ recipes by meal time, dietary needs, SmartPoints value, prep time and popularity
  • Access to members-only digital community, Connect, for motivation and encouragement; 24/7 online chat support
  • WW app connects to your fitness device

Best for athletic dieters
Beachbody on Demand

How Beachbody On Demand works: You’ll get access to hundreds of fitness videos for strength-training, cardio, yoga, dance, mixed martial arts and more. Watch them on your phone, tablet, computer or smart watch, or stream through Chromecast or Apple TV, where you can view your heart rate zones and calorie burn in real time. Videos are also available for download to access offline. Includes popular workouts like P90X, Core de Force, Body Beast, 21 Day Fix, PiYo, plus exclusives like Shaun T’s CIZE: The Next Level dance workout, and Fixate, Autumn Calabrese’s cooking show. Most workouts are about 30 minutes or less.

Compatibility: Optimized for iPhone, iPad and Apple TV and connects to Apple Watch. Also connects to Roku players, Amazon Fire TV or Google Chromecast.

Price: $14.99/month or $99.99/year. Offers in-app purchases. Try free for 14 days.

WEIGHT LOSS APP FEATURES
  • Expert trainer guidance and social support to keep you motivated
  • Access to resources on Shakeology channel and hundreds of Beachbody recipes.
  • Syncs with Apple Watch and Chromecast

Best for tech-savvy dieters
Lose it!

How Lose It! works: Lose It! makes it easy to set your goal and track your progress with weight loss games and challenges to keep dieting fun. Highly customizable, you can log your food and exercise with easy database and tracking tools. Record your food intake in one of three ways: Search food database with over 7 million items, scan a barcode or snap a picture of the food. The app’s recognition software can identify most common food items. Confirm the app’s analysis and select your serving size to automatically add caloric and nutritional information to your log.

Compatibility: Works for most Apple and Android devices. Compatible with FitBit and Nike+ Run Club.

Price: Free with in-app purchases available. Premium subscriptions $19.99–$39.99, annually.

WEIGHT LOSS APP FEATURES
  • Access to Lose It! social community for inspiration and support
  • Macronutrient goal setting and tracking with data analysis and recommendations
  • No ads with premium subscription

Best for music lovers
Aaptiv

How Aaptiv works: Simply enter your fitness goals and find workout programs you like. You can choose a workout based on duration, trainer or music. Then, put on your headphones and let Aaptiv’s trainers guide you to your fittest self through audio-based instructions. Workouts feature music by top artists across genres, specially timed and paced for your workout. You can do the workout at home, at the gym and anywhere else headphones are allowed. Classes are constantly being added, so you’ll never get bored with the same workout every day. You’ll also have access to Aaptiv’s social community for motivation, support and inspiration.

Compatibility: Available on iOS (including Apple Watch) and Android devices.

Price: $8.33 per month, billed annually. Free 7-day trial.

WEIGHT LOSS APP FEATURES
  • Get unlimited access to more than 2,500 guided workouts
  • 40+ classes added every week
  • Great for dieters motivated by digital social communities

Best for dieters on a budget
Fat Secret

How FatSecret works: Through the app, you can keeping a food journal, monitor your weight and chat with other dieters who have similar goals. All of this can help you meet your weight loss goal and see where you went wrong if you don’t. FatSecret helps you track your food in a food diary and provides nutritional information for all foods, brands and restaurants. Also features a large collection of healthy recipes to help you lose weight and comes with an exercise diary to keep track of the calories you burn, a weight chart and a journal to record your progress.

Compatibility: Works on iPhone, iPad, Android, BlackBerry and Windows devices.

Price: Free with in-app purchases.

WEIGHT LOSS APP FEATURES
  • Tracks calories consumed and calories burned
  • Diet calendar function makes it easy to track progress and plan ahead
  • Huge nutritional database with popular food items, brands and restaurants

Best for long-term dieters
Happy Scale

How Happy Scale works: Happy Scale monitors how your weight fluctuates over time and uses an algorithm to chart your overall progress. If you’ve ever been discouraged by a weight loss program because you got on the scale and were inexplicably heavier than before you started your diet, this app could help you stay motivated for long-term weight loss. Happy Scale also helps break up your weight loss plan into realistic and achievable goals. You can easily export your data in a single file and import to other devices.

Compatibility: Works on Apple devices. Automatically syncs with iPhone, iPad and Apple Health.

Price: Free with in-app premium products available for purchase.

WEIGHT LOSS APP FEATURES
  • Set and achieve long-term weight loss goals
  • Syncs between multiple devices and other apps
  • Best for dieters who want to track their progress over time

Best for quick weight loss
Seconds Interval Timer HIIT

How Seconds Interval Timer works: Whether you're into cycling, running, lifting weights, cardio, stretching, boxing or MMA this interval timer will help you keep track of your work and rest periods during workouts. The Seconds Interval Timer app allows you to specify an overall time or program, high/low-intensity interval and rest time between sets. Especially if you have a lot of excess weight to lose, adding high- and low-intensity interval workouts to your diet plan can help you lose weight quickly. Customize your number of sets, countdown times, set times, low or high interval times, rest time, timer sounds, language and volume, playlists and more.

Compatibility: Requires Android 4.2 and up or Apple iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.

Price: Free with in-app purchases

WEIGHT LOSS APP FEATURES
  • Highly customizable
  • Bright colors and large text on a large, clear display
  • Bluetooth heart rate sensor support

Best for adept dieters
My Net Diary

How MyNetDiary works: Free membership plans come with food and exercise tracking, diet planning, weight loss charts, daily analyses and access to MyNetDiary’s social community. Premium membership also includes FitBit activity trackers and body scale, personalized diet advice and tips, plus diabetes or pre-diabetes health tracking. MyNetDiary’s Premium experience is ad-free and includes customer support. It’s popular with adept dieters who already understand the basic components of an effective weight loss program.

Compatibility: Works on most Apple and Android devices. Syncs with iOS Health App and Apple Watch app.

Price: 0–$9/month

WEIGHT LOSS APP FEATURES
  • Nutrition database of 926,000 food items
  • Automatically syncs with multiple devices
  • Works offline
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Top Pick Visit website
  • Set your own daily calorie limits
  • Connects to FitBit and other fitness devices
  • Free
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Runner-UpRead Reviews
  • Works off SmartPoints value system
  • Automatically syncs with FitBit
  • Free
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Runner-UpRead Reviews
  • Tracks calories burned per workout
  • Works with Chromecast and Apple devices
  • $14.99

Bottom line: Are weight loss apps worth it?

If you’re struggling to lose weight or keep it off in the long run, a weight loss app could help you. Studies suggest that dieters who weigh themselves daily are more likely to lose weight than those who don’t keep track of their weight at all. Weight loss apps help you track your progress, and sometimes have extra features like games, exclusive content and social support. Many weight loss apps use tracking tools to monitor your calorie intake and exercise habits, so it can also be easier to see where you still have room to improve.

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Profile picture of Kathryn Parkman
by Kathryn Parkman ConsumerAffairs Research Team

As a member of the ConsumerAffairs Research Team, Kathryn Parkman believes everyone deserves easy access to accurate and comprehensive information on products and businesses before they make a purchase, which is why she spends hours researching companies and industries for ConsumerAffairs. She believes conscious consumption is everyone's responsibility and that all content deserves integrity.