Create an App for our business. Both Android & iOS compatible

We are currently looking at developing an App for our growing financial planning company. The App will need to communicate with other software we use, such as; Midwinter CRM, Schedule Once, and our own website. The app will work as a personal interaction tool for our clients to quickly access their online files and also for us to notify them of updated content/blogs/articles, etc. At this stage, we are looking for initial costs of development before awarding the project. Scope of work attached.