Mobile app testing is crucial for identifying bugs before users do. QAs should be involved in all stages of an app's development lifecycle to find errors and improve ratings. The process starts with a spec, followed by design and UX (prototype), development (alpha), stabilization, distribution (beta testing and release candidate), and finally going live. Automation testing is essential for capturing bugs that may arise in the real world. Agile methodology allows all processes to take place simultaneously, ensuring continuous improvement and delivery of quality code.