You may be wondering, “How am I supposed to cite an app?” Below is an example for APA style.
Description of format:
Rights holder, A. A. (year). Title of Software or Program (Version number) [Description of form].
QxMD Medical Software (2021). Calculate by QxMD (Version 9.0) [Mobile application software]. Mac App Store. https://apps.apple.com/us/app/calculate-by-qxmd/id361811483