MobSF is an open-source, automated static and dynamic security testing tool for detecting security vulnerabilities in iOS and Android mobile apps. It scans both app sources and binaries and provides detailed reports about vulnerabilities. MobSF is distributed as Docker images and comes with easy-to-use REST APIs and, via mobsfscan, can be integrated into CI/CD pipelines. Our experience using MobSF for security testing Android apps has been positive; we recommend trying it for your mobile app security testing needs.