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. 2019 Apr 23;7(4):e10755. doi: 10.2196/10755

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©Brian G Choi, Tania Dhawan, Kelli Metzger, Lorraine Marshall, Awdah Akbar, Tushina Jain, Heather A Young, Richard J Katz. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 23.04.2019.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR mhealth and uhealth, is properly cited. The complete bibliographic information, a link to the original publication on http://mhealth.jmir.org/, as well as this copyright and license information must be included.

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Asynchronous counseling and meal-logging tools of the customized smartphone app. From left to right, in the top row, the first image shows the app’s timeline view of various logs (eg, blood pressure and meals) and the second image represents the app’s photo log feature via the meal a patient photographed; in the bottom row, the first image illustrates the registered dietitian (RD)-patient interface for app-based nutritional counseling, the second depicts the app’s Meal Builder feature with its meal- and food-logging options, and the third exemplifies the app’s weekly challenge feature via a sample counseling note sent by the RD through the app.