Founded in 2008 out of a need to make counting calories simpler, Lose It! was created with the goal of helping members reach a healthy weight by providing them with the tools they need for success. As an early pioneer of calorie counting, Lose It! has spent the last decade helping more than 40 million members lose more than 100 million pounds.

Lose It! is looking to partner with innovative apps, programs, or devices that would mutually benefit our users. We've created an API (beta) that enables developers to transform their health and fitness apps, devices, and programs through the exchanging of Lose It! data to help our mutual users reach their goals.

Please let us know how you'd like to use this API by filling out the survey below and we will be in touch with qualified parties .

Request API Access

What We Offer

By offering several types of user data at different levels of granularity, partners can make their products more personal by populating it with accurate and robust logging data from Lose It!.

Food Logs

Calorie + Macro Logs

Exercise Logs

Body Weight

Water Intake

The Lose It! API utilizes OAuth 2.0 for authentication. For your convenience we can notify your servers when user data becomes available or has been updated via a webhook. Please note that at this time, the API is read-only and we do not currently support write access. To learn more about how our API is structured and what data is available, take a look at our documentation here: developers.loseit.com

Personal Access

At this time, we are not able to grant access to individuals who are seeking access to their logging data, however, we hope to expand access to the Lose It! API in the future. To download daily/weekly reports of your personal Lose It! logging data, check out this help center article.

Questions?

Have a question that we didn't cover? Email us at partners@loseit.com