The banking app development cost can vary widely depending on a number of factors. These factors can include the app's functionality, the complexity of the app's design, the number of features it includes, the platform it is built for, and the level of security required. In general, the cost of developing a banking app can range anywhere from $50,000 to over $500,000. However, it's important to keep in mind that investing in a high-quality banking app can provide significant benefits, such as increased customer engagement, improved customer satisfaction, and streamlined operations.