In addition, consider a fixed-price model. While most businesses use this model with waterfall software development https://mlsdev.com/services/custom-software-development, it is better to be more conservative with the model in the case of app development. In a fixed-price model, the software development team sets a price for the app. They then make an allowance for the duration of time the app will be in the market. While this might seem like a bad idea in the short term, it can help you realize your business goals if the app does not perform well once it launches.