When you choose to Drupal  Developer, you need to know exactly what you want the Drupal  to do and look like. This is because if you leave it up to the developer  there may be legal issues over who owns what idea that was generated during the project planning, development and execution phases. For this reason, it also makes good business sense to have your own legal team present from the time your app development project starts to the time it is released to its respective users. After all, making any app is a business activity so you need to be sure that your legal rights are protected, especially when you pay the development team the agreed-upon fees for their services already