With rapid technology advancements and increased usage of handheld devices such as smartphones, tablets, and smartwatches, people's reliance on these devices has grown beyond their utility as a means to communicate. Today, these devices are also helping people make healthier lifestyle choices regarding nutrition through different dietary applications, thereby saving expensive visits to doctors and nutritionists. These applications provide awareness about nutritional habits and keep track of a person's physical activity for planning their dietary needs. However, the selection or development of the dietary application for catering individual needs, and implementing successful interventions toward behavioral change is a challenging process. 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 findings from this analysis will help to inform the future development of more effective mobile apps. Furthermore, it will also help develop standard guidelines by keeping in view dietician's and researcher's perspective.

翻译：随着技术的进步以及智能手机、平板电脑和智能观察器等手持装置的使用迅速发展,人们对这些装置的依赖已超出其交流手段的用途,如今,这些装置还帮助人们通过不同的饮食应用,在营养方面作出更健康的生活方式选择,从而节省了昂贵的医生和营养学家访问费。这些应用使人们了解营养习惯,并跟踪个人的体育活动,以规划其饮食需要。然而,选择或开发满足个人需要的饮食应用,以及成功实施改变行为的干预措施,是一个具有挑战性的过程。因此,以下研究活动旨在审查现有的营养应用,以长期地审查现有营养应用,突出增强或破坏应用的可用性的关键特征和问题,并确立普及应用以满足大多数人需要的理由。这一分析的结果将有助于为今后开发更有效的移动应用软件提供信息。此外,还将帮助制定标准准则,通过观察迪特人和研究人员的观点。