The app development cost can vary widely based on the platform, features, development team, design, and maintenance and updates.

1. Simple app: A simple app with basic features, such as a weather app or a to-do list app, can cost anywhere from $10,000 to $50,000.
2. Medium complexity app: An app with medium complexity, such as a social media app or a e-commerce app, can cost anywhere from $50,000 to $150,000.
3. Complex app: A complex app with advanced features, such as a virtual reality app or a machine learning app, can cost anywhere from $150,000 to $500,000 or more.

It's important to note that these estimates are just rough guidelines and the actual cost of app development can vary widely based on the specific requirements of each project.

A simple app can cost anywhere from $10,000 to $50,000, while a complex app can cost upwards of $500,000 or more. When budgeting for app development, it's important to consider all the factors that will impact the cost and work with a reliable development team to ensure the success of your project.