COSMIC SIZES

This study empirically evaluates the functionality coverage of 18 mobile applications (apps) for Postnatal care including a recently developed app in Morocco ‘Mamma&Baby’. This evaluation is based on a comparison ofthe COSMIC _ISO 19761 functional size of these apps with the score obtained in a previous evaluation based on functionsextraction through a quality assessment questionnaire. This comparison allows to discuss the relationship between the functional size of the 18 apps, their users' ratings in the Play Store as well as the number of downloads. While for most of the assessed apps, there is only a small shift between the rankings of the two evaluations, for some apps, the shift is huge due to the number of features added and not covered by the score previously obtained. This study illustrates the use of COSMIC as an effective method for corrective or evolutionary updates since it takes into account all the functions and features of postnatal apps. For the 'Mamma&Baby' app, efforts are required to boost the number of downloads, optimize its visibility, and attract the highest number of users.本研究对18款产后护理类移动应用（app）的功能覆盖范围开展实证评估，其中包括摩洛哥新近开发的「Mamma&Baby」应用。本次评估以两项指标的对比为基础：一是各应用的COSMIC-ISO 19761功能规模，二是此前通过质量评估问卷提取功能后得到的评估得分。通过本次对比，可探讨18款应用的功能规模、其在Google Play商店的用户评分以及下载量三者之间的关联。尽管多数参评应用的两次评估排名仅存在小幅变动，但部分应用的排名变动幅度较大，这是因为其新增了大量此前评估得分未覆盖的功能特性。本研究表明，COSMIC是用于产后护理应用纠错更新与演进更新的有效方法，因其能够全面覆盖此类应用的所有功能与特性。针对「Mamma&Baby」应用，需采取相关举措提升其下载量、优化曝光度并吸引尽可能多的用户。