Discover an easy way to lose weight, feel great and stay healthy! Get Window — your reliable intermittent fasting tracker.

Track your daily eating window, log your weight loss and form new eating habits. Don’t limit yourself in what you eat, just eat at the right time!

What features are available for Window users?
- Track your eating window and your fast all in one app.
- Schedule your eating windows in advance.
- Get notified when your eating windows open and close.
- Challenge yourself with fasting, mindfulness, nutrition, workouts or self-care tasks.
- Try water fasting.
- Use Siri to open or close your eating window from any device.
- Check on your eating window or fast from your Lock Screen, using the Window widget.
- Sync your data with Apple Health app.

Discover the Premium features:
- Choose from popular fasting plans
- Attach daily notes and photos
- Track your weight

Сhoose from different subscription options. Our standard subscription options are:
* 3-months Subscription
* 1-year Subscription
*Subscription with a free trial period will automatically renew to a paid subscription. You can cancel your subscription in the iTunes settings at least 24- hours before the end of the free trial period. Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term.
*Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period.
*You can cancel a free trial or subscription anytime by cancelling your subscription through your iTunes account settings. This must be done 24 hours before the end of a free trial or subscription period to avoid being charged. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service.

Window is intended to be a tool to track intermittent fasting and is not a medical or healthcare service. The content within Window is for informational purposes only. You should consult with a medical professional before starting intermittent fasting or any other weight loss program, especially if you are pregnant or suffer from a medical condition

Happy tracking!

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By using Window you agree to our Terms of Service and Privacy Policy.
Privacy Policy:
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What’s New

Version 3.46.3

Make your intermittent fasting life easier with our new update.
Thank you for your continued support and comments! Do not hesitate to share your feedback with us via

Ratings and Reviews

4.5 out of 5
7.6K Ratings

7.6K Ratings

BlueEyeBird ,

So helpful!!

I love this app. I use it every single day. I am doing the OMAD but it does help to be able to leave a note when I eat a particularly high carb meal or I want to remember that I went somewhere in particular and that’s why my window might have been open longer than another day. I prefer to use the flexible window because of my work and family responsibility don’t always go hand and hand with a reliable time routine. The ability to have a scheduled or a flexible window is a great option for people who never quite know what the day will hold. Plus I never know if I’ll be satisfied after an hour or if I’ll need a little extra food that day, but I don’t feel the need to keep eating because my window hasn’t closed yet. This app helps me not only keep track of my window and fasting time, it also helps keep track of my weekly (sometimes daily) weights. It not only gives me a place to log in my weight, it also has a very clear and easy to read graph above it tracking my progress. When I haven’t lost much or barely an ounce or two and I start to get down about it, I look at the graph and it really is a pick me up to see that the line of the graft is still going downwards. I would recommend this app for anyone who is entering the IF or OMAD lifestyle. So much more handy than caring a notebook around.

tturtle2007 ,

Worth the price! Trust me!

I never buy apps, especially health ones. But since starting fasting, I wanted to find something to help me keep track of my fast on the go. I downloaded a bunch of free ones and they weren't what I wanted.

Window is very flexible and user friendly. You can set daily reminders for when your fast ends and begins. Lots of times I see it pop up and I'm able to check in with myself and change my Window to later because I'm not hungry yet. It's much easier than watching the clock waiting for the fast to be over, allowing food and time to be in control. Just set your times and you'll be reminded. So forgetting about eating time helps you be more engaged with your body.

I love how you can track your fast, see it on the calendar, and see your weight on a graph. It also syncs up with the Apple Health app. Best part is the author of "Delay, Don't Deny" Gin Stevens' son made the app. Definitely worth it when I seen that. Great book and happy to have an app to assist me further.

CarterDog ,

This USED to be a great app....

This used to be an amazing app. Now, it’s terrible. The developers obviously have never fasted themselves. If they had, they would know how the app SHOULD function! It should function EXACTLY like it used to before these money hungry developers took over. Do you know this used to be FREE???
Let’s say you have a four hour eating window. You eat and then after an hour you’re not hungry so you feel it’s safe to close your eating window, even though you could have another three (3) hours of eating. So you close your window on the app. But now, another hour goes by and you realize your still hungry! So you go to OPEN your eating window so you can eat but Guess what?? You CAN’T OPEN your eating window for another day because THEY SAID SO! 🤬 They only let you ONE TIME PER DAY! ARE YOU KIDDING ME? Is this app for ROBOTS?its certainly not for a human being that needs to re-open their eating window!! This app is WORTHLESS. You can get free versions that are so much better- like the “ZERO” app. Whoever is doing the new “developing” on this app is NOT improving it, they have made it AWFUL. DO NOT BUY IT. DO NOT EVEN USE IT. It’s GARBAGE. They should be ashamed with themselves !!
Get the ZERO app! It’s much more human being friendly AND IT’S FREE‼️

Developer Response ,


Thank you for reaching out in the comments and sharing your thoughts with us.

Kindly note that the app can be used for free, and purchasing a subscription is completely optional. You may decline the subscription offer and continue with the limited app version. We're sorry if there has been a misunderstanding.
As for changing the time of eating windows, we'd really appreciate if you could get in touch with us via so we could look into issue more profoundly. Thank you for understanding.

We're sorry that your experience with the app wasn't the one you expected. But we'd really like to win your trust back.

Best regards,
Support team

App Privacy

The developer, ThrivePort, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases
  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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