I have build a tool in MS Excel for users to check whether the contracts they draft contain all the necessary information. I want to transform this tool into a stand-alone application. The application should be simple to use, but also to maintain. I should be able to "patch" the application as new legislation becomes relevant. It should also have a nice look and feel. It should also work on iPhone, iPad and Android. I do not want to sell the application, but use it as a marketing tool for my legal services. It should therefor not be too expensive to build.