National Institute of Standards and Technology has developed a guide to help organizations vet applications that run on mobile devices. NIST advises that individuals should weigh any productivity gains offered by a mobile app against the potential security and privacy risks they introduce. Many mobile apps are created quickly by authors unknown to the end users. Users download many third-party mobile apps through online stores such as the Apple App Store for iOS and the Play Store for Android devices, either by paying small fees or for free. To obtain apps for free, users generally agree to accept advertisements or surrender personal information.”]
Source: https://www.cuinfosecurity.com/nist-publishes-guide-to-mobile-apps-vetting-a-7839