Best Diet Apps for Weight Loss (2020)

Back before technology became a major facet of our everyday lives, you might have considered grabbing a friend to join you on your diet journey. After all, it’s always easier when you have someone to compare notes with and complain to, right? Well, as they say nowadays—there’s an app for that. 

No matter what type of diet you’re embarking on, there’s a good chance you can easily find an app to support your endeavor. Here, we’ve listed some of the best diets out there, along with the best diet apps should you want a bit of help and support along the way. 

Best Diet Apps

Best Intermittent Fasting Apps 

First up is intermittent fasting, which can be a difficult plan to follow. Boasting benefits like cellular repair, less oxidative stress, and weight loss, the gist of IF is on-and-off fasting. There are tons of different programs you can follow—some of which are even broken down by age group—or you can simply make up your own plan. Either way, here are a few of the best intermittent fasting apps:


When you download the Zero app, you’ll be in good company. This app has nearly 500 thousand 5-star reviews. It’s backed by an advisory board full of medical experts, and loaded with helpful content to get you through your fast. The app’s personalized plans are super helpful, since no two people have the exact same fasting requirements. Available on Apple and Android devices, free with in-app purchases.

Related: 20 Best Workout Apps


This nicely pared-down app allows you to track your fast/eat cycles with a simple interface that contains everything you need to know in one place. You’ll see how far into your fast you are, how long you have to go, and even how many estimated calories you’ve burned. Fastient allows you to set and manage your fasting goals, and even take notes for future reference. Available on Apple or Android devices, free with in-app purchases. 

Fast Habit

Fast Habit is the app that makes Intermittent Fasting fun. Well, almost. With a beautifully designed interface and all the data you could ever ask for in one easy-to-understand dashboard, Fast Habit is an incredibly helpful tool. Try out different fasting plans or customize your own, then synch with your Apple Watch for on-the-go information right at your fingertips. Available on Apple or Android devices, free with in-app purchases. 

Best Paleo Apps

The wildly popular paleo diet calls on you to “eat like the cavemen ate,” with a focus on whole, unprocessed foods that could be obtained from the land. The diet welcomes fruits and veggies but is heavy on the meat, and limits food groups like dairy and legumes. 

Paleo (io)

Wondering if that food you’re about to eat will fly on the paleo diet? This app’s helpful “eat this/not this” interface will clear it right up for you! It’s perfect for those just starting out on the diet, since it can be daunting to keep track of which foods are approved or not. Available on Apple or Android devices, $0.99

Nom Nom Paleo

If you’re following a paleo eating style, the Nom Nom Paleo app is going to be your new best friend. It’s like having a top-quality paleo cookbook right at your fingertips every time you hit the kitchen. With totally nom-worthy full-color photos of every recipe (and there are tons!), plus a helpful category search, you’ll love this super-helpful app. Available only on Apple devices, $5.99

Related: Best Free Apps for Managing Diabetes

Paleo Plate

If you can’t get enough of Instagram foodie feeds, you’ll love this full-color paleo app. Search for recipes—or share your own!—on this beautiful paleo-friendly app. Available only on Apple devices, free with in-app purchases. 

Best Keto Apps

Similar in nature to the Paleo diet, the ketogenic—or keto, for short—diet is among the most popular no-carb options out there. The goal here is to put your body into a state of ketosis, forcing it to burn fat more efficiently. We’ve rounded up a few apps that will become your go-to as you navigate the ins and outs of the keto diet.


Senza is the keto-friendly app that can do it all. Take the guesswork out of the keto diet with this simple interface that allows you to search for recipes (along with a breakdown of all included ingredients!), get recommendations for low-carb options if you choose to eat out, and even track glucose and ketone levels. Available on Apple or Android devices, free with in-app purchases. 

Carb Manager

You can’t use just any tracking app when you’re adopting a keto lifestyle. That’s why the Carb Manager app is so great for the keto diet—it allows you to track not only calories, but total carbs and macros as well. And with a solid recipe database of delectable-looking keto-friendly options, Carb Manager is a can’t-miss keto app. Available on Apple or Android devices, free with in-app purchases. 

Lazy Keto

Following the keto diet doesn’t have to be super complicated. You can even do it if you’re lazy. We’re kidding, of course, but the Lazy Keto app definitely deserves a mention as one of our favorite keto apps. It’s chock full of amazingly simple recipes you can follow for any meal of the day, along with snacks and condiments. Have a food you need to use up? Simply plug it into the “search by ingredients” section and the app will return recipes you can make with your chosen ingredient. Available on Apple or Android devices, free with in-app purchases. 

Best Whole30 Apps

Whole30 is a 30-day reset that everyone’s trying their hand at these days. The key to success? Plan ahead and be prepared, since you’ll need to navigate a pretty long list of no-no foods. These apps will help you plan your meals for the day with ease so you can stick with it for the “whole 30” days—no pun intended. 

30 Whole Days

Is that food you’re about to eat an approved part of the Whole30 plan? Find out with this comprehensive app perfect for anyone trying to incorporate more whole foods into their diet. Simply type a food or ingredient to find out whether it’s a go or a no-go. Available on Apple or Android devices, $2.99

Related: The 30 Best Mental Health Apps

30 Days Whole Food Meal Plan

For a small price, you’ll have access to a bevy of Whole30-approved recipes for every meal of the day. Skip the hassle of trying to figure out what to eat each day and starving because you didn’t have time to plan ahead: this handy recipe planner has got you covered. Available only on Apple devices, free with in-app purchases. 

Whole30 Diet

Need an app that’ll serve as a great intro to the Whole30 way of eating? This one’s for you! Here, you’ll find helpful content in the form of tips, recipes and videos to show you everything you need to know in order to have a successful 30 days. Available on Android devices, free with in-app purchases.

Best WW Apps

One of the most successful diet plans of all time, the Weight Watchers diet plan has tons of avid fans. It’s far less restrictive than some of the diets listed above, but the key is to keep a close eye on your daily totals, whether that’s calories or points. These apps can help you do that. 

The official WW app

Voted #1 for weight loss for 10 years running, Weight Watchers is a great option if you’re looking for a way to lose weight and keep it off. The organization’s official app is a great accompaniment to the diet, with full-color recipes, calorie and points tracking and even a personalized assessment that leads to a fully customized diet program. Available on Apple and Android devices, free with in-app purchases. 


Designed with kids and families in mind, this simple, fun app makes losing weight less of a burden. It focuses more on healthy eating and reaching personal exercise goals than a restrictive style of dieting, which is great for younger participants. And the clean, super-simple interface makes adapting to a new lifestyle a breeze. Available on Apple and Android devices, free with in-app purchases. 

Next up, here’s what you should know if you’re thinking of trying intermittent fasting on the keto diet.


  • Autophagy“Short-term fasting induces profound neuronal autophagy.”
  • The Journal of Nutritional Biochemistry“Beneficial effects of intermittent fasting and caloric restriction on the cardiovascular and cerebrovascular systems.”
  • Translational Research: “Intermittent fasting vs daily calorie restriction for type 2 diabetes prevention: a review of human findings”

Jacqueline M. Faulkner

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