Intermittent fasting (IF) has become the go-to diet for weight loss, with celebs and many others touting it as the best way to drop pounds and feel better. Another reason people love it? Fasting diets come in many shapes and schedules, such as the 16:8, 5:2, and eat-stop-eat diet, to name a few of the most popular ones out there. You can pick one that works best for your routines specifically; you just have to keep your fasting and feeding windows straight. Don't want to worry about setting alarms each day to remind yourself it's time to eat? Intermittent fasting apps can do all of that for you.
But there are as many apps out there as IF plans. To start, look for ones that cater to your specific needs. “When looking for an app for your intermittent fasting plan, first consider what your goals are,” says Erin Palinski-Wade, RD, the author of Belly Fat Diet For Dummies. “Do you want the app to just track your fasting time? Track your progress? Or help you with meal planning?”
And remember: You may still want to check in with a pro like a dietitian or doctor to make sure IF is even a suitable weight loss method for you because that's not necessarily the case for everyone. "If you're on certain medications or have certain medical conditions, it can actually be extremely dangerous," says Seattle-based registered dietitian nutritionist Ginger Hultin, RDN, the owner of ChampagneNutrition and author of Anti-Inflammatory Diet Meal Prep and How to Eat to Beat Disease Cookbook. An expert can help you find a plan that's right for your body—then, an app can keep you on track.
Another thing to keep in mind: As effective as IF has been for many people, there's no set number of pounds you can expect to lose by doing a fasting diet, says Hultin. Plus, you may not get the same results as someone else who's on your chosen IF plan.
Ready to dive into intermittent fasting and need a tool to help you along the way? Here are 12 dietitian-approved intermittent fasting apps designed to take the stress out of following any IF plan.
Window is jam-packed with features that make intermittent fasting as simple as possible. It lets you schedule your eating windows, notifies you when eating windows open and close, lets you sync your data with the Apple Health app and Apple Watch, and provides a blog with tips on how to be healthier.
“If you're unsure of where to begin, the Window app can help with that,” says Colleen Moltzen, RD, of Keatley MNT in New York, adding that the app can “keep you motivated with visuals” that easily allow you to monitor your weight loss progress.
The basic app is free, but you can also subscribe to the premium version for $9.99 monthly or $39.99 yearly. The upgrade unlocks all IF plans, individual meal plans, challenges that help you build new habits, and nutrition and mood trackers.
Download for iOS
Femometer is designed specifically for women and comes with various capabilities to fuel your IF success, including a step-by-step guide to intermittent fasting, a comprehensive set of trackers, including weight, water, sleep, and activity, and reminders to help you hit your goals.
“Success is driven by motivation,” Moltzen says, and those mini reminders “can keep you alert and interested.”
You can enjoy basic features of this app for free. You can also purchase a $9.99 monthly subscription, a $14.99 quarterly subscription, or a $49.99 yearly subscription. Upgrading will give you access to a personalized fasting plan that includes a nutrition guide.
Intermittent fasting is about more than just weight loss—you still want to load up on the good stuff too. Fastic has more than 400 recipes incorporating many healthy, filling foods to help you make the most of your eating windows. It also tells you what your body is doing during your fast and offers a fasting timer and step counter, as well as connection with a large community of fellow fasters.
The community element is clutch, says Moltzen, because motivating one another can make success easier.
The app is free, but you can also join Fastic PLUS for a $11.99 membership for one month, $27.99 for three months, $45.99 for six months, or $74.99 for a year. You'll gain access to the full recipe book, plus daily and weekly challenges to keep you motivated.
Zero can be customized to track your fasting times, which means it works regardless of the type of IF plan you’re on (even if you’ve sort of made up your own schedule). And this can make sure you stay consistent, says Palinski-Wade. You can choose from several pre-set fasting windows or create your own schedule for up to seven days.
The interface is clean and simple, making it super easy to navigate. The app also has a dashboard that can help you analyze your fasting habits over time.
You can use the app for free or sign up for Zero Plus. With a $9.99 one-month subscription or a $69.99 one-year subscription, you can track advanced statistics, create custom fasting plans, and connect with your FitBit or Oura ring.
If you want to track your fasting times and keep an eye on your diet, Fastient has some of the most comprehensive tracking functions out there, allowing you to maintain a record of your food intake and stay on top of your overall progress. It features a wide, open interface that leaves plenty of room for you to journal, view your data in easy-to-read graphs, and access your info within the app or on your desktop.
“When it comes to following a meal plan for results, tracking is key for progress and accountability,” says Palinski-Wade, who likes that Fastient allows you to manage all your goals in one place and adjust as needed for different fasting styles.
This one is free for download, with the option to buy Fastient Premium. A yearly subscription costs $4.99, while a lifetime subscription costs $11.99. The purchase grants you access to a dark mode and allows you to upload progress pictures.
BodyFast gives you 10 different IF plans to choose from—and also serves up loads of coaching and meal planning tips. If you’re committed to IF but struggling with the daily mechanics of it, this app might give you what you need to troubleshoot your challenges.
Palinski-Wade says she loves all the support BodyFast offers, but warns that it could be a little misleading. “The BodyFast coach provides tips based on data such as your age and weight-loss goals, but this is not a replacement for working with a medical professional like a registered dietitian who can truly customize your meal plan for your own unique needs,” she notes.
The app comes with a set of free features. Getting the BodyFast Coach will unlock even more tools. Pricing varies, but you can choose from one-month, three-month, six-month, and yearly plans. You'll have access to over 100 recipes, weekly challenges, and the ability to build a personal plan.
This is a pretty standard IF tracking app (providing daily fasting or goal timing and weight loss progress). But Palinski-Wade points out it includes one unique—and important—component: community support.
“Research has shown that accountability and social support lead to greater success when it comes to making behavior change,” she says. “By engaging in a community of people with similar goals, this app may help you stick with your IF plan long-term for the best results.”
So, if you’re the only one of your friends who’s doing IF and could use some peer support, Vora might be your perfect fit.
Another great thing about this app is that you can use it for free or upgrade to Vora Pro for just $4.99. The upgrade will give you more ways to track your progress, access to the community forum, and the ability to measure your own statistics.
DoFasting gives you seven IF plans to choose from, a library of educational articles and workouts, and over 5,000 recipes. "They also have a bunch of workout videos embedded," Hultin adds, so all of your fitness and wellness advice is in one place.
You can even create a daily, weekly, or monthly meal plan right in the app and compare it with your recommended daily calorie intake. Plus, the app will help you track your weight, water intake, and steps.
It's a free app that also comes with several subscription options: One month currently costs $33.00, three months costs $15.33 per month, and six months costs $11.00 per month.
If you change up your fasting goals all the time (like doing 5:2 one week and alternate day fasting the next), then FastHabit is one of the best ways to keep up with your shifting preferences. Just set up your desired fasting window in the app when you’re ready to begin and go.
You can also set reminders and notifications for yourself or check out your fasting stats over the past 10 days via the simple dashboard, but tracking more than that will require a premium membership.
FastHabit Pro only costs $2.99. The upgrade will allow you to sync the app with your Apple Watch.
The LIFE Intermittent Fast Tracker works with any IF plan since it allows you to set the start and end time and goals for the length of your fasting periods. If you're following the keto diet at the same time, this app can also help you track how long you've likely been in ketosis. Plus, you can connect with others who use the app to fast together and keep each other going.
The basic features are free. Subscribing for $2.99 per month will allow you to unlock custom fasting schedules, notifications when it's time to start and end your fast, and access to your monthly and yearly IF history.
The Ate Food Diary helps you keep a visual food diary, showing you how much time has lapsed between meals and snacks and helping you look back on the food choices you've made and how they made you feel. If you're into social media accountability, Ate makes it easy to share what you've been eating on your channels.
The app's free trial only lasts seven days. After that, you have to sign up for a $9.99 monthly plan or a $49.99 yearly plan. Upgrading removes ads and allows you to continue to use the app.
Simple: Intermittent Fasting is a very simplistic, all-encompassing fasting app, according to Hultin. It will create a customized IF approach just for you. The app includes expert advice and tips to help make your IF journey easy and realistic. It also connects to the Health app on your iPhone to track your steps, weight, sleeping patterns, and water intake—so all of your important numbers stay in one place.
It's a free app, but you can also upgrade to Simple Premium for personalized insights, educational articles, and more. A one-month subscription is $14.99, a three-month subscription costs $29.99, and a one-year subscription is $49.99.