Interval Weight Loss 17+

Scientifically proven

Interval Weight Loss

Designed for iPad

    • Free
    • Offers In-App Purchases



Interval Weight Loss is a scientifically developed weight-loss and well-being program that's proven to deliver lasting results. Developed and tested by Dr Nick Fuller from the University of Sydney, IWL takes a stepped approach to weight loss that's sustainable, resets your metabolism, and allows your body to return to a healthy weight without going into starvation mode. Unlike other programs, we’re not sexy, but we are proven - and we’re easy for everyone to follow.

Download and start your 30-day free trial today.


Transform yourself building healthy habits:

Use our habit tracker to consistently build and maintain habits from IWL’s core principles. Integrate daily routines like balanced eating, regular exercise, and good sleep patterns for lasting health transformations.

Flexible meal plans for your lifestyle:

Gain access to an extensive collection of adaptable recipes that will help you enjoy a varied diet without feeling restricted. New recipes are regularly added to cater to diverse tastes and nutritional needs.

Empower yourself with knowledge:

Dive into videos and articles to understand the science behind IWL’s weight loss and wellness strategies, equipping you with the knowledge to make informed health decisions for lasting change.

Tools to track your success:

Monitor your journey and celebrate your milestones in weight loss, blood changes, waist measurements and more. See the tangible results of your long-term efforts.

Your personal dietitian, just a message away:

Benefit from 24/7 access to a personal IWL dietitian with the PLUS plan, offering customised dietary guidance to align your nutritional choices with your personal health goals, tailored to your unique journey with IWL.


Interval Weight Loss offers quarterly and yearly auto-renewing subscriptions. If you upgrade to the IWL Plus plan, you will also gain access to an accredited dietitian throughout your plan.

Payment is charged to your credit card through your iTunes account at confirmation of purchase. Subscription renews automatically unless you turn off auto-renewal in iTunes Account Settings after purchase, or cancel your subscription at least 24 hours prior to the end of the subscription period.

View terms here:

Privacy policy:
Terms of use:
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What’s New

Version 1.0.37

Bug Fixes & Performance Improvements

App Privacy

The developer, Interval Weight Loss, 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 Not Collected

The developer does not collect any data from this app.

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


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