There are different pricing methods that you can use for your mobile app development consulting services, such as hourly, fixed, value-based, or hybrid. Each method has its advantages and disadvantages, depending on the type, size, and duration of the project, as well as your skills, experience, and reputation. You should choose a pricing method that suits your needs and preferences, as well as the client's budget and expectations. For example, hourly pricing is flexible and transparent, but it can be difficult to estimate the total cost and timeline. Fixed pricing is simple and predictable, but it can be risky if the scope changes or the project takes longer than expected. Value-based pricing is based on the value you deliver to the client, but it can be challenging to quantify and justify. Hybrid pricing is a combination of different methods, such as charging a fixed fee for the initial phase and an hourly rate for the subsequent phases.