The cost of mobile app development in Australia can vary significantly depending on factors like app complexity, features, and design. Generally, you can expect to pay between AUD 10,000 to AUD 200,000 or more. Basic apps may start at around AUD 10,000, while more complex apps with advanced features can exceed AUD 100,000. It's essential to get quotes from different mobile app development companies to understand the specific mobile app development cost to your project.