Agile mobile development allows for iterative delivery of value to clients through frequent collaboration and adaptation to changing priorities. It is well-suited for mobile projects due to their shorter timeframes and focus on mitigating risks from turnover in operating systems and hardware. When working with clients, some common approaches are time and materials billing which allows for ongoing changes until the client is satisfied, or fixed bid which requires careful management of acceptance criteria and bug definitions as stories are swapped in or out. Different types of clients may respond better to more structured or flexible agile approaches. The overall goals are to deliver great software and make clients happy through transparent and flexible development.