Before revision:  Therefore, the following research exercise aims to review existing nutritional applications at length to highlight key features and problems that enhance or undermine an application's usability and build the case for a generalized implementation that can cater to most people's needs. The findingsfrom this analysis will help to inform the future development of more effective mobile apps .
After revision:  Therefore, the following research exercise aims to review existing nutritional applications at length to highlight key features and problems that enhance or undermine an application's usability . For this purpose, we have examined the published literature from various scientific databases of the CINAHL, Science Direct, and PUBMED. Out of our findings, fifty-six primary studies met our inclusion criteria after filtering out titles, abstracts, and full text. A total of 35 apps are analyzed from the selected studies. Our detailed analysis concluded the comprehensiveness of freely available mHealth applications from users and dietitians' frames of reference .